Landsat: Searching for and downloading cloud-free images for a small area

Are Landsat images free? Since 2008, Landsat Level-1 data, as well as Level-2 and Level-3 science products held in the USGS archive, have been available for download at no charge from a variety of data portals. Is Landsat 8 imagery free? All Landsat data are available from USGS for free. How do I find Landsat

Distance from within boundary in Shapely

What is Hausdorff distance in shapely? The Hausdorff distance between two geometries is the furthest distance that a point on either geometry can be from the nearest point to it on the other geometry. Returns a cheaply computed point that is guaranteed to be within the geometric object. This is not in general the same

Calculate Fields with Null Values using arcpy.da.UpdateCursor of ArcGIS for Desktop?

How do you find the null value in ArcGIS? Finding null features Start ArcMap. Load data in the map if necessary. On the main menu, click Customize > Toolbars > Production Editing. Add the Null Feature Remover tool by doing the following: Click the Production Start Editing button. Click Null Feature Remover. Click OK. How

Select by location is not working in the processing modeler

How to select by location in QGIS? Quote from video: So first let's plug the Select by location tool. And I'll just start over here but you can just search for it in the bottom by doing select by location. And then click enter on it. How do I select a polygon in QGIS? From

How to divide a certain country on a map into grids?

How do you draw a grid on a map? Using the ruler, draw a rectangle on the map around the entire city area. Divide the rectangle into 1-inch grid squares. Beginning at the bottom, measure up 1 inch and draw a parallel line from left to right on the horizontal. Measure up another inch and

Logging outgoing request with GeoServer & MapFish

How do I enable logs in GeoServer? GeoServer provides a request logging capability that is inactive by default.To track a history of the incoming requests: Enable request logging by navigating to Settings > Global page, scroll down to Logging Settings, and Enable Request Logging. Enable this feature using Enable Request Logging. What are the logging

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