on February 11, 2023
Measuring distance from observations to coastline
Geographic Information SystemsHow would you measure a coastline? The prevailing method of estimating the length of a border (or coastline) was to lay out n equal straight-line segments of length ℓ with dividers on a map or aerial photograph. Each end of the segment must be on the boundary. Why is it so hard to measure coastline?
on February 11, 2023
Ogr2ogr the result of merging two shapefiles has attributes missing
Geographic Information SystemsHow do I combine two shapefiles with different attributes? Process Click on the Vector menu, Data Management tools, Merge Shapefiles to One Ensure the correct shapefile type is selected (points, lines, or polygons). Select the folder where the two (or more) shapefiles you want to merge are located using the Browse button. How do
on February 11, 2023
Merge without dissolve in ArcGIS for Desktop?
Geographic Information SystemsWhat is the difference between merge and dissolve ArcGIS? Dissolve: A tool that combines multiple features within a layer into one based on a common attribute value. Online help. Merge features: Must be done in an editing session. Can combine selected features within a layer. What is the opposite of dissolve ArcGIS? Union The opposite
on February 11, 2023
Downloading RGB Sentinel-2 with Google Earth Engine and Python
Geographic Information SystemsHow do I download Sentinel-2 images from Google Earth Engine? Quote from video: Right click it. And select download don't worry about any virus warnings just click download anyway save this file into your gis folder. Can you use Python in Google Earth Engine? In addition to the web-based IDE Google Earth Engine also provides
on February 11, 2023
How to add a URL as a QGIS Favorite in browser
Geographic Information SystemsHow do I add a browser to QGIS? The browser panel is located at the bottom of the left-hand panel in QGIS. Click on the Browser tab to open the QGIS Browser. If you do not see the Browser tab, enable it by doing to View ‣ Panels ‣ Browser (Windows and Mac) or Settings
on February 11, 2023
Getting lat&lon extent of country by its name using Python
Geographic Information SystemsHow do you get a long lat? Get the coordinates of a place On your computer, open Google Maps. Right-click the place or area on the map. This will open a pop-up window. You can find your latitude and longitude in decimal format at the top. To copy the coordinates automatically, left click on the
on February 11, 2023
How to export Point-shape coordinates to csv (X,Y)?
Geographic Information SystemsHow do I export a point shapefile to CSV? You can convert shapefile in CSV using GIS software also. You just need to open the shapefile as vector layer and save it as CSV. For adding the vector layer tyou need to go to Layer->add vector layer and browse the shapefile. After the right click
on February 11, 2023
Batch exporting MXD to PDF files using ArcGIS Desktop?
Geographic Information SystemsHow do I export all data driven pages at once? How to export Data Driven Pages to PDF using ArcMap Verify that Data Driven Pages are enabled and that ArcMap is in layout view. Click File > Export Map from the main menu. Navigate to where you want to save the export file. Click the
on February 11, 2023
Install PyQGIS in virtualenv
Geographic Information SystemsHow do I install Python 3.6 in a virtual environment? In order to install Python 3.6, we are required to run the following commands and when asked for, input the sudo password. sudo add-apt-repository ppa:jonathonf/python-3.6. sudo apt-get update. sudo apt-get install python3.6. Can I install different versions of Python into virtual environments? The module
on February 11, 2023
Visualizing points with different colours based on field from polygon layer in QGIS
Geographic Information SystemsHow do I change the color of individual points in QGIS? Quote from video: Then i have to go to setting option canvas and legion selection color you change selection color to blue. How do you show points in a polygon in QGIS? From the main QGIS menu, go to Vector | Analysis Tools |