Is anyone using QGIS as an educational tool?

Who uses QGIS? Approximately 200 000 active users who use QGIS on a weekly basis. These are members in user groups, social media groups. They are active end-users who use QGIS for cartographic work, data analysis and much more. Over 2 million irregular users worldwide.  Is QGIS hard to learn? QGIS can be very easy

How to select and shade polygons I am interested based on existing shapefile in ArcGIS 10.2

How do I add a polygon to an existing shapefile in Arcmap? To create a polygon feature, complete the following steps: Add your data and configure settings for editing. On the ribbon, click the Edit tab. In the Create Features pane, click a polygon feature template. Click the Polygon tool . Click the map to

”More than one row returned by a subquery used as an expression” postgres error

How do you fix more than one row returned by a subquery used as an expression? Technically, to remove the error, add LIMIT 1 to the subquery to return at most 1 row. The statement would still be nonsense. Practically, you want to match rows somehow instead of picking an arbitrary row from the remote

Understanding measurement units for MODIS data?

What is MODIS satellite data? In addition to recording the frequency and distribution of cloud cover, MODIS measures the properties of clouds such as the distribution and size of cloud droplets in both liquid water and ice clouds. MODIS also measures the properties of aerosols—tiny liquid or solid particles in the atmosphere. What is Terra

Map Scale Bar Grossly Incorrect

Why is my scale bar wrong ArcMap? Answer. A scale bar on a map set to a geographic coordinate system using units of decimal degrees only measures distances correctly at the Equator. To apply a scale bar that measures distances correctly over all areas of the Earth’s surface, the ArcMap data frame must be set

Changing style across multiple layers

How do I edit multiple layers at once? Quote from video: You want to be able to go back to the original. So i've done that already. And now what i'm going to do i'm going to edit. This line layer as i want i'm going to record how i've edited. Can you transform multiple

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