Extracting coordinates of segments in raster from TIFF image?
Geographic Information SystemsHow do I extract data from a TIFF image? How to export TIFF metadata Open this GroupDocs. Click inside the file drop area to upload a TIFF file or drag & drop a TIFF file. Your file will be rendered for you in our metadata editor. Click on “Export Properties” button to export metadata to
Resampling hyperspectral data to Landsat 5 TM bands
Geographic Information SystemsWhat is spectral resampling? SpectRes: Simple Spectral Resampling¶ SpectRes is a Python function which efficiently resamples spectra and their associated uncertainties onto an arbitrary wavelength grid. The function works with any grid of wavelength values, including non-uniform sampling, and preserves the integrated flux.
Function access to surrounding object’s variable
Geographic Information SystemsHow to access local variable outside function in JavaScript? Local variables cannot be accessed outside the function declaration. Global variable and local variable can have same name without affecting each other. JavaScript does not allow block level scope inside { } brackets. Can we use a function as a variable value? Yes, a function can
How do I get JSON data into Python script from a ArcGIS geoprocessing service?
Geographic Information SystemsHow can you access geoprocessing functionality in a Python script? A geoprocessing service can be accessed through the Python window in ArcMap, a script tool, or a stand-alone script. A URL is used to connect to and use a geoprocessing service. Connect to a service using ImportToolbox. The path used to import the tool is
Building a python plugin on qgiq 2.6.0
Geographic Information SystemsHow do I use Python plugins QGIS? To install or activate a plugin, go to Plugins ‣ Manage and install plugins…. Installed external python plugins are placed under ~/. qgis2/python/plugins folder. Home directory (denoted by above ~ ) on Windows is usually something like C:\Documents and Settings\(user) (on Windows XP or earlier) or C:\Users\(user) .
Downloading a huge GeoJSON file for features
Geographic Information SystemsHow do I reduce the size of a GeoJSON file? To simplify GeoJSON files, we recommend using the free tool Mapshaper and following these steps. Open mapshaper.org and import your GeoJSON files by using the upload link or dragging your files into the webpage. Once the file has loaded into Mapshaper, click the “Simplify” link
Using decimals in QGIS raster calculator
Geographic Information SystemsHow to do raster calculation in QGIS? To add a raster to the raster calculator expression field, double click its name in the Fields list. You can then use the operators to construct calculation expressions, or you can just type them into the box. In the Result layer section, you will need to define an
Recursive query
Geographic Information SystemsWhat is a recursive query? A recursive query is one that is defined by a Union All with an initialization fullselect that seeds the recursion. The iterative fullselect contains a direct reference to itself in the FROM clause. There are additional restrictions as to what can be specified in the definition of a recursive query.
How to edit a gpx file in a spreadsheet and export the edited table to a new gpx?
Geographic Information SystemsHow do I edit a GPX file? Here are your rough steps: Open the track log. put your mouse over the cloud of points to be deleted, and write down the coordinates. Open the track log in your favourite text editor. Search for the co-ordinates you wrote down, leaving off the last part for precision.
Creating series of lines offset from starting points (ArcGIS, arcpy)
Geographic Information SystemsHow do I offset a line in ArcGIS? Creating a line with the Offset Line window Click the Edit tool. Click the line feature or features for which you want to create an offset line. Click Offset Line. Choose the target in which the new feature will be created. The direction of the selected line