”More than one row returned by a subquery used as an expression” postgres error
Hiking & ActivitiesHow 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
Map Scale Bar Grossly Incorrect
Hiking & ActivitiesWhy 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
Understanding measurement units for MODIS data?
Hiking & ActivitiesWhat 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
Changing style across multiple layers
Hiking & ActivitiesHow 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
R – extract() function – buffer option not working
Hiking & ActivitiesWhat is extract function r? “extract” is an R function which implements the dyad ratios algorithm described in Stim- son (2018) for constructing a latent time series from the raw materials of survey research marginals. How to extract data from raster in R? Extract Raster Values from Points using R Step 1: Create a Raster
OpenLayers snap to road
Hiking & ActivitiesWhat is snap in OpenLayers? The snap interaction modifies map browser event coordinate and pixel properties to force the snap to occur to any interaction that them. See: http://openlayers.org/en/v3.8.2/examples/snap.html. What is the use of OpenLayers? OpenLayers makes it easy to put a dynamic map in any web page. It can display map tiles, vector data