Determining coordinate system of image to be georeferenced?
Geographic Information SystemsHow do you georeference with coordinates? Click the Imagery tab and click Georeference to open the Georeference tab.Note: Click a known location in the raster you are georeferencing (the source layer). Right-click to open the Target Coordinates dialog box. Enter the corresponding x- and y-coordinates for this location. Click OK. What are the two ways
ArcMap10: Changing transparency of a polygon affects symbol in table of contents but not in the map
Geographic Information SystemsHow do I change the transparency of symbols in ArcMap? Click Customize > Toolbars > Effects on the main menu. The Effects toolbar appears. Click the layer drop-down arrow and select the layer that you want to appear transparent. and drag the slider bar to adjust the transparency. How do I change the transparency of
Counting points in polygons using ArcGIS Desktop?
Geographic Information SystemsHow do I count points in a polygon in Arcgis? Procedure Navigate to the Geoprocessing pane. In the Summarize Within window, for Input Polygons, select the desired polygon layer. For Input Summary Features, select the desired point layer. For Output Feature Class, specify an output name in the desired geodatabase location. Leave other parameters at
Weekly raster data for temperature and precipitation in US
Geographic Information SystemsWhere can I download precipitation data? A precipitation data legend file can be downloaded at https://water.weather.gov/precip/archive/nws_precip_legend.avl. How do I get temp data from NOAA? Where can I find this information? Check out NCEI’s station locator at: https://www.ncdc.noaa.gov/cdo-web/datatools/findstation or the Historical Observing Metadata Repository (HOMR) at NCEI at: https://www.ncdc.noaa.gov/homr/. Where can I find weather datasets? Atmosphere
Specify spatial resolution using Rasterio rasterize
Geographic Information SystemsHow to use Rasterio in Python? Rasterio is a highly useful module for raster processing which you can use for reading and writing several different raster formats in Python. Rasterio is based on GDAL and Python automatically registers all known GDAL drivers for reading supported formats when importing the module. How do you resample raster
Cost Path based on Lowest Maximum Elevation Encountered
Geographic Information SystemsHow do you do least-cost path analysis? There are three main steps when you run this analysis: Cost distance – First, you have to calculate the cost in relation to your start point. Cost backlink – Second, you need to calculate the raster backlink. Cost path – Finally, you can calculate it using the cost
Spatial mapping of land use change intensity
Geographic Information SystemsWhat is LULC change detection? Land use land cover (LULC) change detection based on remote sensing data is an important source of information for various decision support systems. Information derived from land use and land cover change detection is important to land conservation, sustainable development, and management of water resources. How do you quantify land
GPS accuracy threshold standard
Geographic Information SystemsWhat is a good GPS accuracy? For example, GPS-enabled smartphones are typically accurate to within a 4.9 m (16 ft.) radius under open sky (view source at ION.org). However, their accuracy worsens near buildings, bridges, and trees. High-end users boost GPS accuracy with dual-frequency receivers and/or augmentation systems. What is GPS threshold? Once the light
Measuring areas in WGS 84
Geographic Information SystemsWhat units does WGS84 use? The WGS84 Coordinate Systems adds Greenwich as the starting point (prime meridian) for the longitude (0°) and sets the units in degrees (°). This coordinate system also has a unique reference code, the so-called EPSG code, which is 4326. Is WGS84 a projection or datum? WGS84 is defined and maintained
Is there an automated way to import a GPX file and use the filename as the layer name in QGIS?
Geographic Information SystemsHow do I convert a GPX file to a shapefile in QGIS? Quote from video: So first things first we need to go up to the add new vector button right up here. And you wanna browse to where you saved your GPX file the one you off your GPS. So mines in here. How