Are ESRI files preprojected? Trying to square a small projection with Web Mercator
Geographic Information SystemsWhy not to use Web Mercator? Similar to the Mercator projection, areas stretch out towards the poles. This means you should not use this projection to display the poles. Due to the apparent distortions, the Web Mercator projection is also not appropriate for any spatial analysis or area calculations. Why is Web Mercator used? The
Radiometric Calibration of LandSat 8
Geographic Information SystemsWhat is the radiometric resolution of Landsat 8? Landsat 8 images have 15-meter panchromatic and 30-meter multi-spectral spatial resolutions along a 185 km (115 mi) swath. What is radiometric calibration in GIS? Radiometric Calibration refers to the ability to convert the digital numbers recorded by satellite imaging systems into physical units. Those units are either
Exporting ArcGIS Metadata to HTML with thumbnail?
Geographic Information SystemsHow do I export metadata from ArcGIS? Exporting metadata from the Metadata toolbar In the ArcCatalog Contents tab, press the CTRL key while clicking the ArcGIS items whose metadata you want to export. Click the Export Metadata button. Provide a location and file name, if appropriate, for the stand-alone metadata XML files that will be
Plotting “diagram” in matplotlib?
Geographic Information SystemsHow do you plot a diagram in Python? Following steps were followed: Define the x-axis and corresponding y-axis values as lists. Plot them on canvas using . plot() function. Give a name to x-axis and y-axis using . xlabel() and . ylabel() functions. Give a title to your plot using . title() function. Finally, to
Calculating the Area of a Raster/Vector in Google Earth Engine
Geographic Information SystemsHow do you measure area in Google Earth Engine? Tips: On your computer, open Google Earth. Search for a place, or select a location on the globe. On the left, click Measure. . Click the map to set measurement points. To remove a point, on the right, click Undo . To complete your line measurement,
Selecting polygon with the largest area in QGIS
Geographic Information SystemsHow do I select part of a polygon in Qgis? From Vector Menu Select Geometry Tools > Multipart To Single Part and Run that tool. This will create a new shapefile where parts are separated in attribute table. From there you can make your rectangle selection. How do I select part of a shapefile in
Can’t remove QGIS plugin
Geographic Information SystemsHow do I uninstall a system plugin? Uninstalling the Plugin Navigate to the System Application > Applications. In the Develop tab, open the application you want to delete. Click the Delete button on the top-right corner. The Confirmation popup window displays. Click Delete to delete the application. Enter “delete” in the text box and click
Rotating non-symmetrical symbols, or avoiding upside down symbols
Geographic Information SystemsWhat is it called when a word says something different upside down? What is an ambigram? An ambigram is a word or design that retains meaning when viewed from a different direction or perspective. How do I rotate symbols in Arcgis? Click the Symbology tab, and select Advanced > Rotation. Select the field that contains
Choosing to use QGIS LTR or another version/release type
Geographic Information SystemsWhich version of QGIS should I use? The 64bit version is recommended for almost all users, unless you are attempting to install the software on a extremely old computer that has a 32 bit processor. It is also recommended that you install the latest release rather than the long term release so that you have
Lost Polygons after clipping Shapefile using QGIS clip fuction
Geographic Information SystemsHow does clip work in Qgis? Clipping allows you to clip the feature with the defined boundary line. To do that open the tool from Vector > Geoprocessing Tools > Clip. You assign Input Vector layer that you want to clip and Clip layer that’s boundary line will be used to clip and finally assign