on February 18, 2023
How to rectify a georeferenced Google Earth image and corresponding layer
Geographic Information SystemsHow do you rectify Georeferencing? After a file has been properly georeferenced, it will display in the correct location within Global Mapper. The initial rectification can always be modified. This is done by right-clicking on the layer in the Control Center and choosing RECTIFY. How do I extract a georeferenced image from Google Earth? Export
on February 18, 2023
How to load mdb geodatabases in QGIS for MAC?
Geographic Information SystemsHow to import MDB file in QGIS? 4 Answers Download the 64-bit version of the ODBC driver: Microsoft Access Database Engine 2010 Redistributable. If you don’t have a 32-bit version of office installed you can just run the executable. Locate the qgis. bat file (mine is in C:\OSGeo4W64\bin\qgis. Open QGIS and drag the mdb file
on February 18, 2023
I have a GeoTIFF that is in “WGS 84” and unts of degrees, and need to get it in units of meters. How to convert using gdal?
Geographic Information SystemsHow do you convert degrees to meters? Quote from video: So in meters to get a distance in meters four degrees we multiply whatever number we have in degrees. How do you read GeoTIFF coordinates? In the TIFF/GeoTIFF framework, there are essentially three different spaces upon which coordinate systems may be defined. The spaces are:
on February 18, 2023
How to install GDAL 2.1.3 using virtualenv (Python 2.7) under Windows 10?
Geographic Information SystemsHow to install GDAL in Python virtual environment? No, this is not working with virtualenv. To do so, you have to link. So: brew tap osgeo/osgeo4mac then brew install osgeo-gdal && brew install osgeo-gdal-python finally brew link osgeo-gdal –force && brew link osgeo-gdal-python –force . Then you can pip install gdal in any virtualenv.Aug 18,
on February 18, 2023
Changing symbol size for layer that is symbolized by unique values in ArcMap
Geographic Information SystemsHow do I change the size of symbols in Arcgis? Resize markers in 3D In the Format Symbol pane, on the Properties tab, on the Layers tab. Expand the Appearance heading and adjust the Height (Z), Width (X), and Depth (Y) properties as necessary. Specify the Dominant size axis to control how the marker gets
on February 18, 2023
Joining CSV tables by multiple attributes
Geographic Information SystemsHow do I combine attribute tables? Joining attributes in one table to another In the table of contents, right-click the layer or table you want to join, point to Joins and Relates, then click Join. Click the What do you want to join to this layer? Click the field on which the join will be
on February 18, 2023
Calculating distance between a point and the nearest line, PostGIS
Geographic Information SystemsHow do you calculate the distance between a point and a line? Quote from video: Minus x1 squared plus y2 minus y1 the quantity squared and you take the square root of that. How do I find the distance between two points in Postgis? You can use ST_DistanceSpheroid to calculate the distance between two geometric
on February 18, 2023
How to create a polygon with a circular hole in openlayers 3?
Geographic Information SystemsHow do you create a polygon with a hole in it Arcgis pro? A hole in a polygon feature is a part of a multipart feature. To create a hole, finish the primary part and sketch the hole. Alternatively, you can split the feature and delete the part, or clip a hole using an existing
on February 18, 2023
How to copy entire fields into a python list
Geographic Information SystemsHow do I copy all the elements in a list Python? Different Ways to copy list: Using the slicing technique. Using the extend() method. List copy using =(assignment operator) Using the method of Shallow Copy. Using list comprehension. Using the append() method. Using the copy() method. What is copy () in Python list? Python
on February 18, 2023
What’s a good way to implement an ‘Attributes to keep’ option in a QGIS processing script?
Geographic Information SystemsHow to write a script for QGIS? Within QGIS, you can use Create new script in the Scripts menu at the top of the Processing Toolbox to open the Processing Script Editor where you can write your code. To simplify the task, you can start with a script template by using Create new script from