on February 7, 2023
Kriging inside a PostGIS database?
Geographic Information SystemsWhy IDW is better than kriging? 3D visualization indicated that IDW is an exact interpolation, while kriging and spline are inexact interpolations. It was also revealed that kriging has the tendency to underestimate data values, compared to actual data values. Spline had the tendency to generate extreme data values along edges of the study area.
on February 7, 2023
Seeking Mobile Data collection software recommendations?
Geographic Information SystemsWhich tool is best for data collection? Top 12 Data Collection Tools of 2023 Magpi. Jotform. FastField. Zonka Feedback. Forms on Fire. GoSpotCheck. Zoho. Paperform. What type of software collects data? Data collection software is a computerised system for the collection and storage of qualitative and quantitative data in an electronic form. The benefits of
on February 7, 2023
Converting selected multipart features to single parts in QGIS
Geographic Information SystemsHow do I extract selected features in QGIS? Once the features have been selected, right click on your dataset and select the “save as” option from the menu. From the interface select the desired file format. Under encoding click the “Save only selected features” box. Click “Browse”and designate the file name and location. How do
on February 7, 2023
How to remove or reset all metadata from FileGeoDatabase (*.gdb)?
Geographic Information SystemsHow do I remove all metadata from a file? Here’s how: Go to File Explorer. Select one or more files in Windows Explorer. Right-click > select Properties from the contextual menu. Go to the Details tab > click Remove Properties and Personal Information to open the Remove Properties dialog. How to remove metadata? Android Open
on February 7, 2023
QGIS export vector as CSV with Decimal Degrees (not Meters)
Geographic Information SystemsHow do I change coordinates to decimals in QGIS? You right-click on the layer and select “Save as …”: Click ‘Browse’ near CRS in the resulting dialog and select WGS84 EPSG:4326 as the CRS for the new file – this will save it with decimal degrees as the coordinate system. How do I export coordinates
on February 7, 2023
Creating a report from features that have been selected
Geographic Information SystemsWhat are the main features of a report? The key elements of a report Title page. Table of contents. Executive summary. Introduction. Discussion. Conclusion. Recommendations. References. How do I create a report in GIS? Creating a report Click the View menu, point to Reports, then click Create Report . On the first page of the
on February 7, 2023
Seeking QGIS geometry generator manual?
Geographic Information SystemsHow to use geometry generator QGIS? Quote from video: Again if we go to the expression. Under the geometries. We can check the nodes to points and this will allow us to get all of the multi-point.
on February 7, 2023
PostGIS convert point->raster->GeoJSON
Geographic Information SystemsWhat is the difference between ST_Transform and ST_SetSRID? ST_Transform is often confused with ST_SetSRID. ST_Transform actually changes the coordinates of a geometry from one spatial reference system to another, while ST_SetSRID() simply changes the SRID identifier of the geometry. Requires PostGIS be compiled with PROJ support. What is srid 4326? The SRID is used to
on February 7, 2023
How to change “No data – -3.40282e+38” in a raster through interpolation using QGIS?
Geographic Information SystemsHow to fill Nodata in raster? With a bit of trial and error, we’ve found the most effective way to fill in NoData cells is using the Close Gaps tool. You can find the Close Gaps tool in the Grid toolbox. Change the input raster to your DEM or any raster data set with holes.
on February 7, 2023
How to cut / paste only certain features from a vector layer onto a new vector layer in QGIS?
Geographic Information SystemsHow do I copy selected features to another layer in QGIS? Use the Select feature by rectangle tool to select the feature in the map (copy from). Click the Edit (menu)>Copy Features button. Highlight the layer in the TOC that the feature will be pasted to. Click the Edit (menu)>Paste Features button. How do I