Calculating new field to represent sum of values in existing field in ArcMap?

How do I calculate a field based on another field in ArcGIS? Procedure In ArcMap, right-click the selected layer in Table Of Contents, and select Open Attribute Table. In the attribute table window, create a new field. In the Editor toolbar, click Editor > Start Editing. Right-click the newly created field, and select Field Calculator.

How to install shapely for python 2.6 (Mac) NOT 2.7?

How to install shapely for Python? Install Shapely on Windows Find out your whether you are using Windows 32-bit or 64-bit. Go to Settings => System => About => System Type . Find out your python version. pip install wheel. Go here and download the wheel corresponding to items 1–2. pip install \ .  

Creating labels with table style

Convert .mdb file shape area and length units to meter with Qgis

How do I convert units in Qgis? If you want the measurements to be expressed in meters, simply switch units in Settings>Options>Map Tools> Preferred distance units. 

Convert a raster to GeoJSON polygons in PostGIS

How do you convert raster to polygon? Navigate to ArcToolbox > Conversion Tools > From Raster > Raster to Polygon. In the Raster to Polygon window, specify the raster created in Step 2 in the Input raster field. Specify the name and location for the output polygon feature class. Fill in any optional parameters.  Does

Plotting and analyzing extracted elevation data in R?

How do I get elevation data in R? Get Point Elevation Data. Point elevation is accessed from get_elev_point() . This function takes either a data. frame with x (longitude) and y (latitude) locations as the first two columns or a SpatialPoints/SpatialPointsDataFrame as input and then fetches the reported elevation for that location.