Extracting raster pixel value in ArcGIS Desktop?
Hiking & ActivitiesHow do I extract pixel values from raster in ArcGIS? To extract values from multiple rasters or a multiband raster dataset, use the Extract Multi Values To Points tool. The interpolation option determines how the values will be obtained from the raster. The default option is to extract the exact cell value at the input
How to perform reverse geocoding to custom area on the map?
Hiking & ActivitiesHow do you reverse geocoding? Reverse geocoding can be carried out systematically by services which process a coordinate similarly to the geocoding process. For example, when a GPS coordinate is entered the street address is interpolated from a range assigned to the road segment in a reference dataset that the point is nearest to. How
Converting to PDF using QGIS?
Hiking & ActivitiesIf you want a PDF you need to first create a composer window, File->New Print Composer.. . Once you have a new print composer you can add a map ( Layer->Add Map.. ) and add it by dragging an area in the composer. You can then export the composer to PDF using File->Export to PDF..
Confusion matrix from supervised learning
Hiking & ActivitiesA Confusion matrix is an N x N matrix used for evaluating the performance of a classification model, where N is the number of target classes. The matrix compares the actual target values with those predicted by the machine learning model. What is confusion matrix in supervised classification? A confusion matrix is a commonly used
Postgis query for nearest neighbor returns distant coordinates
Hiking & ActivitiesHow do I find my nearest neighbors distance? The average nearest neighbor ratio is calculated as the observed average distance divided by the expected average distance (with expected average distance being based on a hypothetical random distribution with the same number of features covering the same total area). How do I find the distance between
Setting rendering order of line layers in QGIS
Hiking & ActivitiesHow do I change the order of rendering in QGIS? To resolve this in QGIS, choose the Layer Properties and in the Symbology tab tick the option – Control feature rendering order. Then choose the Order button…. Here you can define the order of how your map features are drawn in the map. How do