Polygon Shapefile

Set the output feature class (shapefile or geodatabase feature class) and set the Template Extent to Same as layer , i. Each item usually has attributes that describe it, such as name or temperature. My cropped (according to extent) state shapefile looks like this: How do I clip the state shapefile to match the complex outline of the DEM? I have tried intersecting the two, which works, but that does not distinguish between the state and watershed boundaries, making the map very difficult to read (especially with counties!). It stores the data as primitive geometric shapes like points, lines, and polygons. in = inpolygon(xq,yq,xv,yv) returns in indicating if the query points specified by xq and yq are inside or on the edge of the polygon area defined by xv and yv. You may find more current shapefiles for the United States from the U. You can use the Auto-Complete Polygon task when creating new polygons to help ensure that your data forms a continuous fabric. I’ve downloaded some HUC watershed boundaries from the Lake Tahoe area in California, they are here on github. Open Quantum GIS Desktop. In the Import Location dialog box, under Files Of Type, select the Shapefile format. Set the target layer to the polygon layer into which you want to create new features. routing or reachability analysis with software like Network Analyst) we also offer special routable shapefiles which only include the road network. Shapefile (. True - The polygons will be smoothed into simpler shapes. The first step towards geospatial analysis in Python is loading your data. This object has 5 slots – data, polygons, bbox, plotOrder,bbox, proj4string. KARST_MM65_IN is a polygon shapefile that shows sinkhole areas and sinking-stream basins associated with rocks of Silurian, Devonian, and Mississippian age in southern Indiana. The tz_world_mp shapefile (zip, sha1) captures the same boundaries. So as a prelude to doing just that, this post will cover how to plot polygons using the shapely and descartes libraries. pyplot as plt and geopandas as gpd , A GeoDataFrame of the service districts called service_district is in your workspace. Right-click the polygon shapefile in Table Of Contents and click Open Attribute Table. In Arc GIS, the data structure appeared perfectly but I lost its attribute table. Shapefiles are limited to one record containing one polygon or line string with a maximum 30 points. ncl: This example shows how to modify gsn_add_shapefile_polylines to have it draw only a subset of the features in the given shapefile. click2shp allows you to draw point, line, and polygon features atop a map in your web browser, and create a GIS shapefile of those features with a single button click. Data for multiple points, polylines, and polygons can be stored in one SHP file, but each SHP file can store only one type of geometry. Geospatial data in vector format are often stored in a shapefile format. Go to Vector > Geometry Tools > Singleparts to Multipart. Mark all sea areas with "Select Features by Rectangle". I guess that you did googling on that issue and failed. In your main World Wind folder (eg C:\Program Files\NASA\World Wind 1. When you convert a closed polyline, the original polyline is erased and is replaced with a polygon object. Mapshaper is an editor for map data. A complex polygon is a polygon with other polygons inside of its boundaries. Coverage includes the en San Rafael (Calif. Navigate the directory structure to the left of the widow and single-click the directory that you would like to create the new shapefile in. The data was compiled by the GeoPlan Center using tax code boundaries as defined in 2010 county parcel data from the Florida Department of Revenue (FDOR). Shapefile polygons must have at least 5 points and the last point must be the same as the first (i. shp) file format as well as a Geographic Information System (GIS) database. When we create a new shapefile, we need to choose from those three types of features: point, line, and polygon. Geometry columns, like shapefiles, are designed to store vector geometries, i. a shapefile and a csv-file (you can get both here ) time effort. Is this something you could help me with? I have only seen guides on internet for such plotting using a csv file in addition to the shapefile. 2D polygons can have optional height applied. Open Quantum GIS Desktop. This procedure looked for both new or missing polygons, and was also used to check attribute values. Census Bureau᾿s American Factfinder and census Tiger Line shapefiles and then join the two and display the data on a map. Does anyone know of a source for a good, accurate CA polygon? Everything that I have, or have found is pretty terrible around the bay area especially. If you are unusre about what kind of Feature Class you need to create for your Map Project, contact Dr. (File -> New -> Shapefile) •After you have named the file and selected the feature type to be "Polygon", press edit and select or import the coordinate system (projection) to correspond with the coordinate system of your ArcMap file. can be used to do the next step. Need to convert polygons to points in shp files - posted in GIS: Ive been looking all over for a GIS editor that can convert an ESRI shape file with polygon data in it to an ESRI shape file with point data in it without losing any attribute info and without doing it one polygon at a time. I'll use the fiona library to read the file in, and then create point objects with shapely. The Create New Shapefile dialog box opens. Mengambil Polygon Peta dan Disimpan ke Shapefile Baru (Tutorial ArcGIS 3) Posted on April 26, 2016 by Hasta Nurhusada Jika kita ingin mengambil sebagian polygon atau area suatu peta dan kemudian disimpan ke dalam shapefile baru, maka kita bisa menggunakan ArcGIS. spirix_shapefile_importer. We will be using free, open-source software and public domain files to make it easy for anyone to follow along. How do I draw on the map and create a shapefile of the features I draw?. Wind, Solar, Hydrogen, Biomass and Electric Transmission. The web site is a project at GitHub and served by Github Pages. My question is an extension of Vertical lines in a polygon shapefile. Polygons for all land areas in the world, ie. A shapefile may contain one of three kinds of graphical elements: points, lines, or polygons. I would like to import the shapefile with the study area polygons (six total) into. Creating Shapefiles - Drawing lines, points or polygons (vectors) in ArcGIS. The polygons (I think) needed to be in the same shapefile (layer). Actual hydrologic units often extend beyond the state and county boundaries. If the shapefile contains more than one polygon, you must select the polygons that you want to use to crop the image. An optional step is to create a feature class which shows the buffer division lines. A shapefiles allows for you to create shapes on a map using latitudes and longitudes. This would make the data easier to manage and I would use a column in the attribute table to delineate each form, rather than have each be in a separate shapefile. in Excel format with latitude and longitude. When true, the polygon is self-intersecting which means that the ring of the polygon crosses itself. Shapefile is a geospatial vector format in geographic information systems (GIS) software. setCacheValue(name, value) None. If the output shapefile already exists in the Output Folder, a number will be appended to the end to make the shapefile name unique (for example, rivers_1. The shapefile is ESRI proprietary vector data format. Below is a subset from the metadata attached to the datasets that describes USG cartographic representation of the boundary lines. Select Vector > Geometry Tools > Multipart to Singleparts. Robin's Blog How to: Convert OSM waypoints defining polygons into Shapefile March 5, 2014. NRCS Indiana GPS Task Guide DNRGPS Software Page 1 of 3 Loading Data from ArcMap to DNRGPS. Census Bureau. My output was a shapefile called clippedtiles, which you can see below in blue. Add a column to the attribute table to hold the area information. shp) is stored in a folder, is composed of geographic features and their attributes, and contains one feature class. In elementary geometry, a polygon (/ ˈ p ɒ l ɪ ɡ ɒ n /) is a plane figure that is described by a finite number of straight line segments connected to form a closed polygonal chain or polygonal circuit. TIGER/Line Shapefile, 2012, county, Travis County, TX, Current Topological Faces (Polygons With All Geocodes) Shapefile Metadata Updated: May 17, 2013 The TIGER/Line shapefiles and related database files (. HI, I have a shapefile with polylines taken from SRTM data and I would like to convert this into a polygon shapefile. It is developed and regulated by Esri as a open specification for data interoperability among Esri and other GIS software products. Buffer(s) window remains open. Use this dataset with care, as several of the borders are disputed. Has an extensive choice of coordinate. Museum of Vertebrate Zoology. To complete the outline of the polygon, press the F2 key. …Let's have the PARCELS shapefile current session. When both point and polygon data are present, it is often useful to identify the enclosing polygon for each point, so information from both tables can be merged. Creating a New Shapefile (Points, Polylines, and Polygons) 1. Robin's Blog How to: Convert OSM waypoints defining polygons into Shapefile March 5, 2014. Geographic features in a shapefile can be represented by points, lines, or polygons (areas). True - The polygons will be smoothed into simpler shapes. The x,y tolerance is the minimum distance between coordinates before they are considered equal. It's because you used the wrong key words. The following instructions assume that users will be digitizing shapes in a new, empty shapefile. This object has 5 slots - data, polygons, bbox, plotOrder,bbox, proj4string. A world borders shapefile suitable for thematic mapping applications. When true, the polygon is self-intersecting which means that the ring of the polygon crosses itself. Simple Step-by-step instructions video clips are available. Convert files between AutoCAD DXF, ESRI Shapefile / SHP, and KML for Google Maps and Google Earth, among other formats. · To delete a polygon, simply select it with the selection tool then press the Delete key. Open the new shapefile and click the "Toggle Editing" button. Highlighting shapes. Mapshaper is an editor for map data. Drawing Boundaries In Python. While that new Geometry field for spatial fields is really handy, given these limitations, I went back to my pre-spatial file mentality and using polygon files. But the power of shapefiles is in the records (the data) associated with each shape. shapeType == shapefile. The library assumes that all shp, sbf and shx files will exist with this given name The second parameter is a name to access later to the shapefile information from the Basemap instance, as we will show later. Ethnic group territories represented as polygons in shapefile format. These shapefiles will normally include some geographic attribute data such as names and id codes, but are mostly data-less. Use the form to ask a question or provide comments about this dataset to the contributor. can be used to do the next step. Creation of Polygon Data Sets Documenting Land-Use and Land-Cover Data. How to Calculate the Area of Polygon in ArcMap. The GIS data of the BLM Oregon consist of 1) statewide or regional data captured at a scale of 1:100,000 (or smaller) and 2) framework, or base, data captured at the 1:24,000 scale (or larger) that have been built and maintained by BLM Oregon, 3) data cover mostly BLM-managed lands with some private lands included. I am two searches short of just making the dang thing myself (may be a lot less accurate then i need). GeoExpress allows you to crop images using a shapefile with one or more polygons. I have GM 12. The purpose of this tutorial is to provide guidance on how to create polygons using the QGIS software. After adding the layers you wish to clip, decide which polygon shape you want to clip your data to. Shapefile (. There are 256 courses identified and 553 polygons (Many courses show as discontinuous polygons because fairways/green/tee zones are separated by tracts of wetland, forest or other land covers. These directions are also relevant to digitizing and editing Shapefiles with existing features. Creating Shapefiles - Drawing lines, points or polygons (vectors) in ArcGIS. An older version number indicates updates have not been necessary since then. Batch editing a large number of building polygons with a shapefile - best workflow? 1 HI all, I am interested in cleaning up the building traces at UC Davis, California, by using their official GIS shapefile which was derived from AutoCAD files. ncl: This example shows how to modify gsn_add_shapefile_polylines to have it draw only a subset of the features in the given shapefile. Read a shapefile into R. The shapefile format was originally defined for use in Esri GIS applications, but the format has become an industry standard, and many GIS and mapping tools are able to read and write shapefile data. This brings up another discussion on the Shapefile vs Feature Class topic. It is now possible to read and write shapefiles using a variety of free and non-free programs. This video will help you to create a new polygon type shapefile. Shapefile (. Name the shapefile and select the feature type (Point, Poly, or Polygon) from the drop-down menu. It worked by taking the polygon on top and removing the overlap from the polygon underneath. Source code available at http://code. AutoCAD 2019 and AutoCAD 2020 support! CAD2Shape converts DWG/DXF to All Shapefile types, such as Multipatch, 2D/3D Polygon, Polyine, Points and Texts. This layer was created by extracting California. Shapefile datasets A shapefile dataset (. Overlaying is only for 2 or more raster files, while intersect, union, identify etc. Zipped shapefile with WISE large lakes, vector polygon. Set the PROXYGRAPHICS system variable to 0. Use your clip tool for this, where the tile index is your input layer and the polygon is your clip feature or overlay layer. The shapefile (or ESRI shapefile) format is a geospatial vector format, and is one of the most commonly used map formats. The Shapefile converter uses the Oracle Spatial Java-based Shapefile AdapterShapefileJGeom and SampleShapefileToJGeomFeature classes to load a Shapefile directly into a database table, with the Oracle-equivalent. This will open up a menu of options for that layer. A Shapefile (SHP) is a digital vector storage format for storing geometric location and associated attribute information. Delineated from 1:40000 color infrared NAPP imagery. I'm using a fresh-out-of-SVN of Qgis 1. Save your changes. The first parameter shapefile name must go without the shp extension. You may find more current shapefiles for the United States from the U. I understand that OGR, Fiona, Shapely etc. Geometry sample data. Determines if the output polygons will be smoothed into simpler shapes or conform to the input raster's cell edges. The workflow below shows how we can approximate the following ogr2ogr command with the OGR api using a decently large parcel shapefile from King County GIS. Polygon shapefile containing the boundaries of US National Parks greater than 100,000 acres in size. The polygon attribute data include county name and number (FIPS) designations. Currently, self-intersections in polygon shapefiles aren't supported. The shapefile format is simple. points, lines, and polygons. The polygon points in the shape file come in as 2D lat/long values and I've already written code to parse these shape files to get the points of each of the polygons, convert them from lat/lon space into 2D projected linear space inside the Unity world. 3D models are stored as a triangle or polygon soup, with no watertight models or parametric geometries being supported. National Atlas of the United States. Shapefile polygons must have at least 5 points and the last point must be the same as the first (i. Shapefiles store vector information such as points (represented by well locations in this map), lines (river), and polygons (lake). The GeoTIFF is in WGS1984 which is fine, and contains grids that have stretched value and pixel value fields. The dataset contains several shapefiles with point, line and polygon data. points, lines, and polygons. Complete documention is still being written, however it's a simple process and you can use these sample shapefiles to get an idea of how it works. …Centroid points are useful for labeling features…since they usually contain the attributes…of the paired Geometry. That was when this blog by Sean Boon – SQL Server 2008 R2 Map Tips: How To Import Shapefiles Into SQL Server and Aggregate Spatial Data, caught my eye and I got the idea of importing my shapefile into DB and then doing the custom aggregations there itself for solving my performance problems. setCacheValue(name, value) None. Raster to Vector Conversion for Overlay Analysis In some cases, it may be necessary to perform vector-based analyses on a raster data set, or vice versa. My cropped (according to extent) state shapefile looks like this: How do I clip the state shapefile to match the complex outline of the DEM? I have tried intersecting the two, which works, but that does not distinguish between the state and watershed boundaries, making the map very difficult to read (especially with counties!). The shapefile (or ESRI shapefile) format is a geospatial vector format, and is one of the most commonly used map formats. Use this dataset with care, as several of the borders are disputed. Naming conventions differ from those of mathematicians:. The package writes shape types 1 (point), 3 (polyLine), 5 (polygon), 13 (polyLineZ), and 15 (poly-gonZ). Instances of the Shapefile format have often been used as a data exchange format from ESRI formats to non-ESRI applications. Save your changes. Open ArcCatalog 2. Both files are compressed by using the. Prevent small polygon features from disappearing at high simplification. Catherine Riihimaki (x3349) for assistance. Each "shapefile" consist of at least three actual files. Lines are just points that are connected by, wait for it. WATERSHEDS_HUC11_USGS_IN is a polygon shapefile showing the boundaries of watersheds in Southwestern Indiana. Click on shape to download data. Features are most commonly Polygons, Lines, or Points. you can download Quantum GIS from Here. Select the 1 relevant point, line or polygon to apply to this search by clicking on it on the map – it will highlight in red when selected. This separate tilepoly data set was required because many of the land-use and land-cover data coverage tiles were created from several different GIRAS files, some of which have different source dates. Question: I have multiple shapefiles of underwater forms (coral reef, outcrop, sandflat, etc) that I would like to combine into a single shapefile. For the purposes of this guide we will be using a shapefile of the United States and joining it with population data. To explicitly control the output shapefile name and for some additional conversion options, see the Feature Class To Feature Class tool. 2D polygons can have optional height applied. QGIS is an open-access. The data has been derived from OpenStreetMap ways tagged with natural=coastline. Measure polygon area on Google map. For information about the shapefile data format, please consult the ESRI White Paper on the subject. Global Mapper and MapWindow with Shape2Earth plugin to convert SHP files to KML and simplify polygons. Read in the point and polygon data. Figure 3 In Figure 3, the six-sided polygon does not overlap itself, but it does have lines that cross. Converting data between MapInfo and ArcGIS March 15, 2013 July 10, 2015 by KarlHennermann , posted in Infrastructure Our main GIS software is ArcGIS, but we work with other organizations who use MapInfo, and we occasionally receive data from them in MapInfo format, or they ask us to supply data in MapInfo format, for example at the Census. A shapefiles allows for you to create shapes on a map using latitudes and longitudes. Click on one of the points. This dataset contains city limits for the State of Florida. Community Development Agency, County of Marin, California. Simplifying polygon shapefiles in R Recently I downloaded the Crosby Code shapefile from Landcare Research's LRIS server for use in some publications I'm preparing. Naming conventions differ from those of mathematicians:. These directions are also relevant to digitizing and editing Shapefiles with existing features. A few of the many geospatial data portals are:. Forests and Forest Cover, Polygon shapefile in ESRI format (only county forest areas), Published in 1999, Burnett County Government. The shapefile is a collection of files that stores geometrical data in the forms of points, lines and polygon. polygon A polygonal region is a region in space whose boundary is composed of straight line segments. Add an area or perimeter field to a shapefile or feature class in ArcGIS Desktop. This of course requires converting the line/polygon to points first. We demonstrate the merging using an example. Shapefiles are simple because they store primitive geometrical data types of points, lines, and polygons. If you are aware of shapefiles and the corresponding file types in an explorer you may simple drag the shp-file to the layer table and that’s it. Strengths: Offers a wide range of input and output image formats. Draw lines, polygons, markers and text labels on Google maps. Use this dataset with care, as several of the borders are disputed. A shapefile of active county based and polygon based weather warnings. Data formats include downloadable shapefiles, web services, KML files and our basemaps in shapefile format. polygon A polygonal region is a region in space whose boundary is composed of straight line segments. applying to mask to a database channel , or hiding a map group outside a polygon boundary). Community Development Agency, County of Marin, California. Connecticut GIS Data. How do I draw on the map and create a shapefile of the features I draw?. These directions are also relevant to digitizing and editing Shapefiles with existing features. Create a polygon (*. Mengambil Polygon Peta dan Disimpan ke Shapefile Baru (Tutorial ArcGIS 3) Posted on April 26, 2016 by Hasta Nurhusada Jika kita ingin mengambil sebagian polygon atau area suatu peta dan kemudian disimpan ke dalam shapefile baru, maka kita bisa menggunakan ArcGIS. Zipped shapefile with WISE large lakes, vector polygon (ZIP archive) 210. county data. The shapefile should contain valid geometries. Archived NWS Watch/Warnings. org If you have any comments about this dataset, please post them on this page. Below is a subset from the metadata attached to the datasets that describes USG cartographic representation of the boundary lines. How can I do this in IDL? ANSWER: You can extract single shapes or polygons with the Coyote Library routine, cgExtractShape. How To: Convert a shapefile from polygon Z geometry to polygon geometry Summary. AGRC has Land Information Record Parcels for some of the counties in Utah. Note, both the polygon and line datasets are useful for cartographic representation. Things You'll Need To Complete This Tutorial. I want to plot the shapefile, and fill the polygon with a color according to the value in the polygon. Wildlife Management Area Boundary (polygon) Arkansas Game and Fish Commission Wildlife Management Areas [Keywords: biota boundaries environment planning Cadastre wma area management wildlife Arkansas Game and Fish Commission hunting deer duck bear elk racoon AGFC ]. A polygon can be coloured, shaded and textured, and its position in the database is defined by the co-ordinates of its vertices (corners). The shapefile format was originally defined for use in Esri GIS applications, but the format has become an industry standard, and many GIS and mapping tools are able to read and write shapefile data. In some cases, nulls are stored as very large negative values in shapefiles. In Arc GIS, the data structure appeared perfectly but I lost its attribute table. Global Mapper and MapWindow with Shape2Earth plugin to convert SHP files to KML and simplify polygons. Make sure that ArcToolbox is visible Convert patch polygons to lines: 3. When you convert a closed polyline, the original polyline is erased and is replaced with a polygon object. Lines ("polylines") may be used to define AOI polygon boundaries as long as the string of line segments forms a closed polygon; any associated Z or M values will be ignored. I guess that you did googling on that issue and failed. (The bringToFront = TRUE argument is necessary to prevent the thicker, white border of the active polygon from being hidden behind the borders of other polygons that happen to be higher in the z-order. The simplest way is to draw a polygon shape and convert it; however, you could use any polygon shapefile for this. Draw lines, polygons, markers and text labels on Google maps. Convert a shapefile into a KMZ file. 01, and am sure it is possible but i'm not sure how. Batch editing a large number of building polygons with a shapefile - best workflow? 1 HI all, I am interested in cleaning up the building traces at UC Davis, California, by using their official GIS shapefile which was derived from AutoCAD files. Set the target layer to the polygon layer into which you want to create new features. QGIS is a free, open source professional GIS software available for Windows, macOS and Linux used to create and edit geospatial information. Hello, I am working with geographic data in Stata. We can provide that service to you. To convert polylines to polygons. Make sure your data is in a projection system. im not sure if im sending you down the wrong road. county data. FillBgTransparent property. A hole part should remove geometry from its [email protected] instance. Steps to create a new shapefile layer on QGIS. …Let's have the PARCELS shapefile current session. In QGIS, it is under the Vector -> Geoprocessing Tools tab. A shapefile is a simple, nontopological format for storing the geometric location and attribute information of geographic features. Creating a new shapefile. Open Quantum GIS Desktop. The district shapes are organized for download by Congress and stored in the common ESRI Shapefile format. shp in QGIS: This shapefile contains polygons for all municipalities in Norway. Catherine Riihimaki (x3349) for assistance. SQL Server - Learning Spatial stuff - Understanding and Register. Drawing lines, points or polygons (vectors) in QGIS. HI, I have a shapefile with polylines taken from SRTM data and I would like to convert this into a polygon shapefile. The free datasets of climate change projections can be downloaded as a shapefile, a text file, or as an image. You have a custom background. This is version 1. Unload the original point layer. Kml2Shp Online: Convert from Google Earth to Shapefile. When creating SHP files the information is separated into thematic layers. But SpatiaLite can hold any kind of geometry in different rows of the same table, so you have to specify the exact kind of geometries you want to export. This portal is intended to serve a community of GIS users interested in climate change. Museum of Vertebrate Zoology. Instructions provided describe how to convert the selected features of a layer to a new shapefile in ArcMap using the Export Data feature. Open Quantum GIS Desktop. windowing a grid to a polygon to make a new smaller grid) or masking (i. There is a collection of plugins ready to be used, available to download. I am two searches short of just making the dang thing myself (may be a lot less accurate then i need). This shapefile is incredibly detailed, far more so than what I require. This was done to keep the MGRS 1km polygon shapefiles (. Save your changes. Unless I am misunderstanding the underlying information in the shapefile, I do not believe I have x-y coordinates of each county polygon. FillBgTransparent property. Welcome to the SVRGIS page for the SPC. When you are done editing your new shapefile you must save, then close the edit session as follows: Look for the Editor toolbar then click on Editor >> Save Edits, then click Editor >> Stop Editing. So, the test point is outside the polygon, as indicated by the even number of nodes (two and two) on either side of it. I would like to import the shapefile with the study area polygons (six total) into. Because the structure of points, lines, and polygons are different, each individual shapefile can only contain one vector type (all points, all lines or all polygons). In ArcGIS Pro: In the Analysis tab, click the Tools icon in the Geoprocessing group to activate the Geoprocessing pane. What i did was, I simply 'save as' the polygon as a shapefile, and open the data in Arc GIS. Geographically Based Economic Data Economic output per 1-degree grid cell, for 1990, 1995, 2000, and 2005. Prevent small polygon features from disappearing at high simplification. ESRI developed the format with open specifications, and therefore many Geographic Information System software programs have incorporated the ability to read and write shapefile data. Forests and Forest Cover, Polygon shapefile in ESRI format (only county forest areas), Published in 1999, Burnett County Government. City of Waterbury Parcels (29,401 Features) Waterbury's Parcel polygons with CAMA attribute data. shapeType == shapefile. Things You'll Need To Complete This Tutorial. Shape file data needs to be submitted as NAD83 Datum or WGS84 Datum with a Coordinate Reference System of Latitude/Longitude; Shape files must contain valid data and have correct data for their shape type (i. How to Clip an Existing Shapefile by Using a Polygon 1. shapeType == shapefile. …Next, based on the PARCELS, we're going to create centroids. points, lines, and polygons. It is stored as a set of related files and contains one feature class. For shapefiles that contain points, GrADS will draw a mark at each point location. To save the new layer file as a shapefile, right click on the geo-information type (points, lines, polygons have to be saved in separate shapefiles) you want to save and select Data/Export Data… Click on the folder icon and name shapefile you want to export. Open ArcCatalog 2. Shapefiles do not contain an x,y tolerance like geodatabase feature classes. Features are most commonly Polygons, Lines, or Points. Geographic features in a shapefile can be represented with points, lines, or polygons (areas). The shapefile format can support point, line, and area features. The shapefile format is simple. The polygon files are ZIP-format archive files containing land use and land cover data for that area, in ESRI shapefile format. QGIS supports three types of features. Next, select the polygon file that you want to calculate area on and right click. The Latitude and Longitude coordinates corresponds to the lower left corner of each MGRS Grid Zone Designator (GZD).