In Ogr2OGR: what is SRS?
Geographic Information SystemsSRSSRSA spatial reference system (SRS) or coordinate reference system (CRS) is a framework used to precisely measure locations on the surface of the Earth as coordinates. It is thus the application of the abstract mathematics of coordinate systems and analytic geometry to geographic space. What are the functions of ogr2ogr? ogr2ogr can be used to
Identifying port numbers for ArcGIS Online Basemap?
Geographic Information SystemsWhat ports does ArcGIS online use? Portal for ArcGIS uses the HTTP port 7080 and HTTPS port 7443 to communicate. By default, the portal enforces the use of HTTPS to encrypt communication; port 7080 is not used unless you change these settings to allow communication through HTTP as well. How do I connect Basemap to
Remove unwanted regions from map data QGIS
Geographic Information SystemsHow do I delete part of a map in Qgis? Let’s get started! Import the spatial data to QGIS. To create a selection with an expression, first open your dataset in QGIS. Creating a selection to delete information outside our area of interest. From the toolbar at the top, click on the expression icon and
Waiting for Vector & WFS loading
Geographic Information SystemsHow can I download vectors for free? Vector.me Vector.me has a lot of free vectors. Simply enter your keywords, hit search and browse until you find what you’re looking for. You can search through illustration vectors, logos and icons and there’s more than 280,000 to choose from all in AI, EPS, SVG and CDR formats.
Adding TravelTime as Impedance in ArcGIS Network Analyst?
Geographic Information SystemsHow is impedance chosen while selecting the shortest route? If the impedance is a time attribute with live or historical traffic, then the best route is the quickest route for a given time of day and date. Hence, the best route can be defined as the route that has the lowest impedance, or least cost,
Listing total number of features into an ArcGIS Online feature pop-up
Geographic Information SystemsHow do I show feature count in ArcGIS online? On the main menu, click Customize > Toolbars > Data Reviewer. On the Data Reviewer toolbar, click Data Reviewer > Total Feature Count. The Total Feature Count window appears. How do I show related records in the popup in ArcGIS online? Clicking the Show all button
Criteria for cartographic capacity
Geographic Information SystemsWhat are the five principles of cartographic design? Five primary design principles for cartography Cartographers apply many design principles when compiling their maps and constructing page layouts. Five of the main design principles are legibility, visual contrast, figure-ground organization, hierarchical organization, and balance. What are the basic principles of cartographic classification? Five of the main
Tile large raster file in QGIS
Geographic Information SystemsHow do I combine raster tiles in QGIS? QGIS: Raster Merging In the QGIS Browser Panel, select the GeoTiffs you want to merge and right click to add them to the main window. Select Raster > Miscellaneous > Merge. In the Merge dialogue window, for Input files, browse to your directory containing your GeoTiff tiles.
QGIS Tin interplation not working
Geographic Information SystemsWhat is the difference between TIN and IDW interpolation in QGIS? IDW interpolation gives weights to sample points, such that the influence of one point on another declines with distance from the new point being estimated. TIN interpolation uses sample points to create a surface formed by triangles based on nearest neighbour point information. How
Exporting QGIS project using qgis2web
Geographic Information SystemsHow do I export an entire QGIS project? Every layer, including all possible data processed, can be saved as a shapefile. Go to the Layers Panel on the left side. Right-click on the relevant layer. Click on Save as… Select Esri Shapefile. Choose a name and a location. Click on OK. How do I