Can Time Manager ignore/skip time when there is no data?
Geographic Information SystemsWhat are the precedence rules for the tasks in Airflow? Ideally, a task should flow from none , to scheduled , to queued , to running , and finally to success . How do you pass data between Airflow tasks? The first method for passing data between Airflow tasks is to use XCom, which is
GeoServer and GeoPackage through WFS
Geographic Information SystemsWhat is a GeoPackage file? A GeoPackage is an open, standards-based, platform-independent, portable, self-describing, compact format for transferring geospatial information. The GeoPackage standard describes a set of conventions for storing the following within a SQLite database: vector features. How do I install GeoPackage? Installing the GeoServer GeoPackage extension If you haven’t done already, install the
How to display URL / email in popup window
Geographic Information SystemsHow do I add a url to a pop up? Open Link in a Popup Window In order to open them in a new window, we add target=”_blank” attribute to links. However to open the links in a separate popup window, we can make use of the onclick property and specifying a inline JavaScript code
Is MySQL spatial ready for production?
Geographic Information SystemsDoes MySQL support spatial? Following the OGC specification, MySQL implements spatial extensions as a subset of the SQL with Geometry Types environment. This term refers to an SQL environment that has been extended with a set of geometry types. A geometry-valued SQL column is implemented as a column that has a geometry type. Does MySQL
Where can I get public transportation route information for USA?
Geographic Information SystemsHow do you get public transport on Google Maps? Find nearby departures On your mobile device, open the Google Maps app . Enter a destination and tap Directions . At the top, tap Public Transport . To select a preferred mode of transportation and route, tap Options. Done. Scroll to find transport options and times.
Creating contours from DEM with ArcPy?
Geographic Information SystemsHow do you turn DEM into contours? Note: Start ArcMap. Load the DEMs files you want to filter. Load data in the map if necessary. On the main menu, click Customize > Toolbars > Production Contouring. Click the Create Contours button. If necessary, type a value in the Base Contour text box. Type a value
Help interpreting Moran’s I and Geary’s C results
Geographic Information SystemsHow do you interpret Moran’s I results? If the values in the dataset tend to cluster spatially (high values cluster near other high values; low values cluster near other low values), the Moran’s Index will be positive. When high values repel other high values, and tend to be near low values, the Index will be
ArcGIS Python Script, Calculate Field
Geographic Information SystemsHow do I calculate fields in ArcGIS? Right-click the layer or table you want to edit and open its table. Right-click the field heading for which you want to make a calculation and click Field Calculator. How do I calculate a field based on another field in ArcGIS? Procedure In ArcMap, right-click the selected layer
Creating NDVI from multispectral imagery?
Geographic Information SystemsWhat is the formula for calculating NDVI from multispectral imagery? NDVI = (NIR-R) ./ (NIR + R); % [In this step I couldn’t use / to compute, could you tell me why?] How do I create an NDVI image? Now, let’s go through the steps for how to create an NDVI map. Enable Image Analysis
Rendering 3D images from 2+ imagesets + DEM in QGIS
Geographic Information SystemsWhat are the steps to make 3D map from DEM? 4. Create 3D Map View In QGIS, go to View menu >> New 3D Map View. In the 3D Map 1 window: click the Configure button. Elevation: select your DEM or the hillshade. Make any changes to the other settings if you want. In the