on February 12, 2023
How to modify a LYR file using ArcObjects?
Geographic Information SystemsHow do I edit a .lyr file? In ArcMap you can right click on a lyr file in the catalog panel (or ArcCatalog) go to properties and reset the data source path and this updates the lyr file. You are then able to add the layerfile to the map and display the data. Can you
on February 12, 2023
Connecting Grass with R
Geographic Information SystemsWhat is grass R? GRASS GIS can be used to extent the geospatial capability of R by: (1) offering an extensive and robust set of geospatial tools, and (2) provides a way to work with very large (larger-than-memory) spatial data sets. See Using ‘GRASS GIS functionality within a R session’ below for more information. How
on February 12, 2023
How to use the multiprocessing module on python to execute a spatial join?
Geographic Information SystemsHow do you do a spatial join in Python? Join the layers # Addresses filpath In [7]: addr_fp = r”/home/geo/addresses_epsg3879.shp” # Read data In [8]: addresses = gpd. # Check the crs of address points In [10]: addresses. # Make a spatial join In [13]: join = gpd. In [15]: import matplotlib.pyplot as plt #
on February 12, 2023
Commenting Out Definition Queries in ArcGIS Desktop?
Geographic Information SystemsHow do you define a query in ArcGIS? Create a definition query for a layer On the Feature Layer tab set, click the Data tab. to open the Layer Properties dialog box with its Definition Query tab open. Click the New definition query button, or click its drop-down menu to create a new query in
on February 12, 2023
Difference between two Google Earth Engine functions
Geographic Information SystemsWhat are the functions of Google Earth Engine? Google Earth Engine is a cloud-based geospatial analysis platform that enables users to visualize and analyze satellite images of our planet. Scientists and non-profits use Earth Engine for remote sensing research, predicting disease outbreaks, natural resource management, and more. What is the difference between Google Earth Engine
on February 12, 2023
Removing Trailing Zeros from Numeric Field in ArcMap
Geographic Information SystemsHow do you get rid of trailing zeros in numbers? A better way to remove trailing zeros is to multiply by 1 . This method will remove trailing zeros from the decimal part of the number, accounting for non-zero digits after the decimal point. The only downside is that the result is a numeric value,
on February 12, 2023
ESRI REST API clients?
Geographic Information SystemsHow do I access REST API in ArcGIS? Every GIS Service published on an ArcGIS Server is considered a resource and can be accessed through a URL such as http:///arcgis/rest/. This URL is also known as REST endpoint. What is Esri REST API? Introduction. The ArcGIS REST API allows you to administer ArcGIS Server programmatically.
on February 12, 2023
How can I summarize all the pixels from a single raster using Google Earth Engine?
Geographic Information SystemsHow do I get pixel values in Google Earth Engine? You can also use the inspector tool, next to the console tab on the right upper area of the interface. After clicking on a location on the map you will see the values of each band for each map layer displayed for that pixel corresponding
on February 12, 2023
Extract data from NetCDF file based on station
Geographic Information SystemsHow to extract data from netCDF file using R? How to convert NetCDF to CSV using R? Install ncdf4 and lubridate packages. Load your NetCDF file. Extract the coordinates. Time conversion. Extract the variables. Export result as CSV. How do I access netCDF files? To read a netCDF file of known structure, you need to:
on February 12, 2023
Assign symbology for zipped shapefiles in QGIS
Geographic Information SystemsHow do I save a symbology style in Qgis? You can save your current symbol style by clicking the Save Style … button under the Style tab of the Layer Properties dialog. Generally, you should save as QGIS Layer Style File. Save your style under exercise_data/styles . How do I save a shapefile in symbology?