on January 10, 2023
Clarification on Oracle sdo_gtype
Geographic Information SystemsWhat is Oracle SDO? Introducing Service Data Objects. SDO is a Java-based data programming model and architecture for accessing and updating data. What is spatial data in Oracle? Oracle Spatial consists of a set of object data types, type methods, and operators, functions, and procedures that use these types. A geometry is stored as an
on January 10, 2023
Manually set QGIS vertex coordinate in lat-long format
Geographic Information SystemsHow do you convert XY coordinates to latitude and longitude in QGIS? Toggle editing (ctrl-E) and open the calculator (ctrl-I). Select “create a new field”, call it “Longitude”, and make the expression $x. Do the same for a second new attribute called “Latitude” and make the expression $y. You should now have latitude and longitude
on January 10, 2023
IDW/Kriging running slow in R
Geographic Information SystemsIs kriging or IDW more accurate? For the forest, ordinary kriging had higher correlation (r = 0.921, P < 0.01) than IDW interplation (r = 0.875, P < 0.01). The results indicated that ordinary kriging is suitable for mapping tree density in dense forests, while IDW interpolation is more appropriate for scattered tree savannah woodland.
on January 10, 2023
Control feature rendering order in QGIS with plugin
Geographic Information SystemsHow do I reorder layers in Qgis? The order of layers can be changed by simply dragging and dropping them up and down the legend. How do I group features in Qgis? Quote from video: Just click select all layers. And add selected layers to project now my all layers are visible here so i
on January 10, 2023
Download OSM data from XYZ Tile
Geographic Information SystemsHow do I download OSM data? Download Directly from OSM Simply go to www.openstreetmap.org and find the area you would like to download data for. Hit the “Export” button and you will see a screen with the Extent of the download appear. You can customize this download as either the “current extent” or manually select
on January 10, 2023
Is the Intersection Operation Commutative?
Geographic Information SystemsLike addition and multiplication, the operations of union and intersection are commutative and associative, and intersection distributes over unions. Is intersection operation associative or commutative? The result of Intersection operation, which is denoted by A ∩ S, is a relation that basically includes all the tuples that are present in both A an S. 2.
on January 10, 2023
Selecting small area from larger map to work within using QGIS?
Geographic Information SystemsHow do I select a specific area in QGIS? 1 Answer In the layers menu section on the left-hand side of your QGIS window, highlight the layer that you want to perform a section on to make it active. Select the “Select Features by area or click” icon located on the upper icon menu strip
on January 10, 2023
Stopping Ribbon from Auto Collapsing in ArcGIS Pro
Geographic Information SystemsIt’s this tiny down-arrow at the far right of the ribbon. If it’s pointing up, the ribbon will auto-collapse. If it’s down, the ribbon will stay open. You can also use the keyboard shortcut Ctrl-F1 to toggle it on and off. How do I get my ribbon back in ArcGIS Pro? To open them, follow
on January 10, 2023
Seeking Postcode Shapefiles for UK?
Geographic Information SystemsHow do I get a postcode for the UK? It is between four and six characters long (including the single space). Examples of postcode sectors include “SO15 2”, “DN16 1″. The postcode unit is two characters added to the end of the postcode sector. Examples of postcode units include ” SO15 2GB “, ” DN16
on January 10, 2023
Learning how to use Mapinfo Professional ?
Geographic Information SystemsHow much does MapInfo Pro cost? MapInfo Pro is available from RockWare for customers in the US and Canada only. SKU DESCRIPTION PRICE 04023 MapInfo Pro Single 1-Year Term $970.00 04021 MapInfo Pro Single 3-Year Term $2,175.00 04024 MapInfo Pro Single Premium 1-Year Term $1,570.00 04025 MapInfo Pro Single Premium 3-Year Term $3,980.00 How