Calculate Bounding Box from Center at scale
Geographic Information SystemsHow do you calculate bounding box? To make coordinates normalized, we take pixel values of x and y, which marks the center of the bounding box on the x- and y-axis. Then we divide the value of x by the width of the image and value of y by the height of the image. width
Find a geographic concentration of values?
Geographic Information SystemsHow is geographic concentration measured? The simplest method to quantify geographic concentration is computing the share of exposure (EAD) held by the k largest geographies or regions in the portfolio relative to total exposure. What is geographic concentration? Geographic concentration indicates the extent to which a small number of regions account for a large proportion
Bbox for a particular feature of a layer in geoserver
Geographic Information SystemsWhat is Bbox in Geoserver? The bounding box determines the extent of the data within a layer. Native Bounding Box—The bounds of the data specified in the Native SRS. These bounds can be generated by clicking the Compute from data button or they can be generated from the SRS definition by clicking the Compute from
How can I both resample and aggregate a raster using Terra?
Geographic Information SystemsWhat is the difference between resample and aggregate? Whereas resampling is used for changing the resolution of a dimension, aggregating reduces the number of dimensions in the data. Examples of summary statistics include the mean, maximum value, minimum value or values of specific quantiles of the dataset. What will happen when resampling of a raster
Seeking highly customizable GIS platform?
Geographic Information SystemsWhat are the two types of GIS software? There are two basic categories of GIS software: commercial and open-source. Commercial GIS software involves a paid license of some kind, either through subscription or a one-time perpetual license. Open-source GIS software is free for anyone to use. What is the latest version of GIS software? The
Opening *.lyr file in QGIS without access to ArcGIS for Desktop?
Geographic Information SystemsCan you open a .LYR file in QGIS? LYR files can be added to an ArcMap document to automatically load and style data in a single step. Within QGIS, the “QLR” file format offers an equivalent functionality. SLYR adds direct support for LYR files within QGIS, and adds tools for automated batch conversion of LYR
Shapely’s unary_union very slow!
Geographic Information SystemsWhat does Unary_union do? Returns a geometry containing the union of all geometries in the GeoSeries . What does buffer do in shapely? Returns a GeoSeries of geometries representing all points within a given distance of each geometric object. See http://shapely.readthedocs.io/en/latest/manual.html#object.buffer for details. What is Hausdorff distance in shapely? The Hausdorff distance between two geometries
Using custom shortcut keys in ArcGIS while table of attributes is active window
Geographic Information SystemsHow do I assign a shortcut key in Arcgis? Click the Keyboard button on the customize dialog box. Click the category containing the command you want to modify. Click the command to which you want to add a keyboard shortcut. Click in the Press new shortcut key text box and press the keys on the
Assigning census block demographics to postal data (zip/zip+4)
Geographic Information SystemsWhat is zip code and CBSA? The CBSA is a 5-digit numeric code which identifies the Metropolitan Statistical Area or Micropolitan Statistical Area in which the ZIP code lies. For larger metro areas, this database also includes the Metropolitan Division (if any) in which the ZIP code lies. What is a valid US ZIP code?
Creating Polygon from a Raster
Geographic Information SystemsHow do you turn a raster into a polygon? Procedure. Use the Raster to Point tool to convert each pixel to a point. Navigate to ArcToolbox > Conversion Tools > From Raster > Raster to Point. These points are later used to label polygons. How do you cut raster into a polygon shape? Here are