Posted on December 26, 2022 (Updated on July 10, 2025)
NumPy ValueError: operands could not be broadcast together with shapes (1,2) > (1678,2218)
Hiking & ActivitiesWhere operands could not be broadcast together with shapes? How to Fix: ValueError: operands could not be broadcast together with shapes. This error occurs when you attempt to perform matrix multiplication using a multiplication sign (*) in Python instead of the numpy. dot() function. How does broadcasting work in NumPy? The term broadcasting describes how
Posted on December 26, 2022 (Updated on July 10, 2025)
Mouse Scroll in ArcGIS different from that of Google Maps?
Hiking & ActivitiesHow do I change the mouse scroll in Arcgis? Changing the Zoom of the Mouse Wheel To accomplish this, go to “Customize”, click “ArcMap Options”, and then click “General Tab.” Near the bottom of the dialog, there is an option to “Roll Forward/ Drag Up to Zoom” in or out of the map. How do
Posted on December 26, 2022 (Updated on July 10, 2025)
Intersecting polygons in Oracle
Hiking & ActivitiesWhat is an intersecting polygon? Self-intersecting polygons, crossed polygons, or self-crossing polygons are polygons some of whose edges cross each other. They contrast with simple polygons, whose edges never cross. How do you intersect two polygons? Intersection of Convex Polygons Algorithm Create an empty polygon as P. Add all corners of Polygon1 that is inside
Posted on December 26, 2022 (Updated on July 10, 2025)
3D GIS Mapping over Web
Hiking & ActivitiesHow do I make a 3D map in ArcGIS online? Quote from video: To start using 3d maps in arcgis. Online go to the website arcgis.com and click on scene. Close the default splash screen so that you can start to use the globe. Does ArcGIS online have 3D capabilities? ArcGIS Online includes interactive maps
Posted on December 26, 2022 (Updated on July 10, 2025)
Creating Vector layer from selected features with PyQGIS
Hiking & ActivitiesHow do I create a shapefile from selected features in QGIS? Once the features have been selected, right click on your dataset and select the “save as” option from the menu. From the interface select the desired file format. Under encoding click the “Save only selected features” box. Click “Browse”and designate the file name and
Posted on December 26, 2022 (Updated on July 10, 2025)
QGIS swaps(?) attribute tables of PostGIS layers
Hiking & ActivitiesHow do I add a PostGIS layer to QGIS? Open QGIS, select Layer -> Add layer -> Add PostGIS layers, it should open the interface to connect a PostGIS table. 2. In the dialogue, click “New”, it should open the dialogue to configure the PostGIS server, and database (nyc1). Enter relevant information in Step 3,