Category: Geographic Information Systems

How to properly address autocorrelation for logistic regression of spatial data

How do you address spatial autocorrelation? In linear models of normally distributed data, spatial autocorrelation can be addressed by the related ap- proaches of generalised least squares (GLS) and auto- regressive models (conditional autoregressive models (CAR) and simultaneous autoregressive models (SAR)). Why should a test of spatial autocorrelation be performed before statistical analysis of geographic

Click event doesn’t work with Google Maps

How do I add an event to Google Maps? To add an event, head to Google Maps on Android, tap on Contribute >Events > Add a public event. You can add an event name, tag the location, and add the time and date of the event as well.  Why is my Google Maps API not

Are North Arrows Pointless?

When not to use a north arrow? You typically do not need a north arrow when: there is a geographic grid present. the map presents a well known area to the map user, e.g. the map of the world, Europe, or your whole country on one sheet. Do maps always need a north arrow? Global

Esri Print dijit fails when using the Export service of my arcgis Server and works when the same is hosted in arcgis online

How do I export data from ESRI? Procedure In ArcGIS Online, navigate to the Content page. Open the item details for the hosted feature service. Click Export Data, select the data format to export to. The file is saved as an item in My Content. To download the file, navigate to the item in the

Treatment of Landsat 7 SLC error in Google Earth Engine?

When did Landsat 7 stop working? The ETM+ provided useful scientific information about the world’s landmasses for 23 years. Landsat 7 completed its science mission on April 6, 2022. How do I download Landsat data from Google Earth Engine? Quote from video: So you go to uh data sets uh on the googlers engine platform.

QGIS 3.4 Layout composer tool bars are too small to see

How do I show the toolbar in QGIS? QGIS Desktop offers a number of customization options. You can toggle the visibility of toolbars by clicking View | Toolbars, or by right-clicking the menu bar or enabled toolbar button, which will open a context menu allowing you to toggle toolbar and panel visibility.  How do I

Python syntax error in field calculator

Why is my field calculator greyed out? Additionally, the Field Calculator is disabled when the layer is not editable due to the following causes: The editing capabilities of the layer is not enabled. The layer type is non-editable in ArcGIS Pro. The table type is non-editable in ArcGIS Pro.  How do I use field in

Saving shp data to PostgreSQL database?

How do I import a SHP file into PGAdmin? Answer: To access the Shapefile Loader when using PGAdmin 4, you can simply open the Shapefile Loader application from its source location. Navigate to where you have installed your PostgreSQL DB: And then within the Postgisgui folder open the shp2pgsql-gui.exe. The PostGIS Shapefile Loader will now

Running Point To Raster has output coordinate system different from input?

Do rasters have projections? You can use the same coordinate system for your data so it will all be in the same projection. A raster dataset is projected into a new spatial reference using a bilinear interpolation approximation method that projects pixels on a coarse mesh grid and uses bilinear interpolation between the pixels. How

Getting started with GDAL?

Is Python a GDAL? The GDAL project (primarily Even Rouault) maintains SWIG generated Python bindings for GDAL and OGR. Generally speaking the classes and methods mostly match those of the GDAL and OGR C++ classes. There is no Python specific reference documentation, but the tutorials includes Python examples. Is GDAL free? Is GDAL/OGR proprietary software?

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