Category: Geographic Information Systems

Getting started with MapServer 6 and Google Maps

How do I get started on Google Maps? Quote from video: When you're ready just tap this icon to start navigating. Writing Google Mouse will give you live spoken directions so you don't have to look at your phone while you're driving. Is a free mapping program offered by Google? With Google Maps Platform flexible

Empty folder named ‘1’ created when ArcMap opens

How do I change the default folder in ArcMap? After you have created or opened a map document, you can change the default geodatabase at any time either via the Catalog window (right-click the geodatabase you want to use as the default for your current document and choose Make Default Geodatabase) or via the Map

Spatial join polygons to polygons when completely only works from context menu

How do you spatial join points to polygons? To begin making a spatial join between a polygon layer and a point layer, right click on the polygon layer in the table of contents, and choose Joins and Relates>Join. The join dialogue opens. Make sure that in the dropdown at the top you have chosen “Join

Merging rasters using QGIS raster calculator?

How do I combine two rasters in QGIS? QGIS: Raster Merging In the QGIS Browser Panel, select the GeoTiffs you want to merge and right click to add them to the main window. Select Raster > Miscellaneous > Merge. In the Merge dialogue window, for Input files, browse to your directory containing your GeoTiff tiles.

Can’t find OTF (on the fly) check box in QGIS 3

How do I enable fly projection in QGIS? To enable “on the fly” projection, click on the CRS Status button in the Status Bar along the bottom of the QGIS window: In the dialog that appears, check the box next to Enable ‘on the fly’ CRS transformation. Type the word global into the Filter field.

Editing different types of vocabulary in attribute table of shapefile in QGIS

How do I edit text in attribute table QGIS? Right click the layer in the Layers Panel then click the Open Attribute Table menu option. Click the Toggle Editing Mode button. Click the New Field button. Input the field’s Name, Type, and Length, then click the OK button. How do I change the format of

Exporting feature attributes to CSV with PyQGIS

How do I export an attribute table in Pyqgis? To export a QGIS attribute table as an Excel spreadsheet or other format right-click the layer name in the Layers (Table of Contents) panel, hover over the ‘Export’ option, then select ‘Save Features As’. How to convert Attribute table in QGIS to Excel? Right-click on the

How is dateline a problem when calculating distances?

What is the difference between geometry and geography in PostGIS? PostGIS gives you a choice of two different ways to store geospatial data: Geometry, where it assumes all of your data lives on a Cartesian plane (like a map projection); Geography, where it assumes that your data is made up of points on the earth’s

Troubleshoot code error for If then else Logical VBScript in ArcMap 10.3.1

How do I generate sequential numbers in ArcMap? Double-click the Sequential Number function. This generates the Expression and the Code Block section to create the sequential numbers.  How do I add text to a label in ArcMap? ArcMap labels are placed dynamically and are the easiest way to quickly add descriptive text for many features

Calculate geometry field automatically from east and north fields in QGIS

How do I calculate a field in QGIS? The quick field calculation bar on top of the attribute table is only visible if the layer is editable. In quick field calculation bar, you first select the existing field name then open the expression dialog to create your expression or write it directly in the field

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