on January 23, 2023
Converting text field to date field in ArcGIS Pro
Geographic Information SystemsProcedure. Open ArcMap and add the layer or table that includes the text field to be converted to a formatted date field. Open the Convert Time Field geoprocessing tool: ArcToolbox > Data Management Tools > Fields > Convert Time Field. How do I convert a text field to a date field? Convert text dates by
on January 23, 2023
GRASS GIS producing different slope than GDAL?
Geographic Information SystemsWhat is the difference between GRASS GIS and QGIS? Whereas GRASS GIS focuses more on data processing and analysis, QGIS focuses more on cartography and map making. They compliment each other well and you can even use the QGIS GRASS Toolbox to load in GRASS data directly, and run GRASS processing commands from the QGIS
on January 23, 2023
Generate a polygon based on 2 points along an axis
Geographic Information SystemsHow do you plot points on a coordinate plane to make a polygon? Polygon in the Coordinate Plane Step 1: Plot each point on the coordinate plane. Step 2: Label each point of the coordinate plane. Step 3: Join the adjacent points to form a polygon. For example: Draw a polygon with the following coordinates:
on January 22, 2023
Adding script tool to ModelBuilder in ArcMap?
Geographic Information SystemsHow to add Python script to model builder? For more information, refer to Writing a Python script.Creating a script tool Right-click a toolbox and click Add > Script. Use the Add Script wizard to specify general script properties. At the next page of the Add Script wizard, specify what script will be executed when the
on January 22, 2023
Maximum limit for plotting lat-long on google maps
Geographic Information SystemsLatitude and longitude values must correspond to a valid location on the face of the earth. Latitudes can take any value between -90 and 90 while longitude values can take any value between -180 and 180 . What is the maximum number of markers on Google Maps? Answers. you can add 200 markers at a
on January 22, 2023
Points in Polyon with two different CRS using QGIS?
Geographic Information SystemsHow do I Reproject points in QGIS? QGIS allows you to reproject data “on the fly”.To understand what ‘on the fly’ reprojection does, deactivate this automatic setting: Go to Settings ‣ Options On the left panel of the dialog, select CRS. Un-check Automatically enable ‘on the fly’ reprojection if layers have different CRS. Click OK.
on January 22, 2023
Why is attribute table of my imported MIF file is showing null values in QGIS?
Geographic Information SystemsHow do I change the null value in QGIS? By default, when you browse an Attribute Table for a Layer in QGIS and there are blank values for data the cell will show a NULL value. However, choosing Settings > Options > on the Data Sources Tab > and the Feature Attributes and Table section
on January 22, 2023
Getting elevation at lat/long from raster using python?
Geographic Information SystemsHow do I get latitude and longitude from an image in Python? Image method. from exif import Image. img_path = ‘images/image_exif.jpg’ images/image_exif.jpg import PIL. if img.has_exif: Image images/image_exif.jpg: has the EXIF 0220. How do I find the elevation of GPS coordinates? How to calculate the elevation of a GPS point? Altitude cannot be calculated
on January 22, 2023
GIS projection for non-geographic data
Geographic Information SystemsWhat projection is best for mapping small areas? For a regional map—a few counties, or even many smaller states—a UTM (Universal Transverse Mercator, not the same as a Mercator, confusingly) projection might be a good choice. One of the biggest advantages of a UTM is that measuring distances between two points is a snap. How
on January 22, 2023
Shifting ArcMap shapefile (lines) from point A to point B?
Geographic Information SystemsHow do you shift a shapefile? In ArcMap open the Catalog window, browse to your shapefile, right-click > Copy, then right-click > Paste into the same folder. Now just drag and drop your selected features to their new location. Once you are happy with their position select Edit > Save Edits and Edit > Stop