on January 27, 2023
Creating Isolines from point Data
Geographic Information SystemsHow do you get contour lines from points? Contour lines can be created by attributing each point to the lithic count amounts. Note: Overall contour accuracy depends on how well the data used to create the input raster represents the actual surface. Therefore it is important to evaluate the data and its purpose to avoid
on January 27, 2023
How to determine drive times like those available in google maps
Geographic Information SystemsHow do I get driving times on Google Maps? Check traffic now & later On your Android phone or tablet, open the Google Maps app . Search for a destination, or tap a place on the map. At the bottom, tap Directions. At the top, tap Driving . At the bottom, tap the white bar
on January 27, 2023
QGIS: concatenate_unique several columns in attributes table
Geographic Information SystemsHow do I merge columns in an attribute table in QGIS? Open the layer properties (double-click the layer) and click on the Joins tab in the left column. Click the green Addition symbol at the bottom of the dialog box. Change the Join layer to the standalone table and change the join and target fields
on January 27, 2023
Adding Excel workbook to ArcMap?
Geographic Information SystemsAdding a Microsoft Excel table to ArcMap Click the Add Data button . Click the Look in arrow and navigate to the Excel workbook file (. xls). Double-click the Excel workbook file. Click the table you want to add to ArcMap. Click Add. Why cant I add Excel file to ArcMap? The error occurs because
on January 27, 2023
QGIS 1.8 will not start on Windows 7
Geographic Information SystemsWhy is QGIS not launching? Try removing Python from your system if it is already installed. There can be a conflict between the existing python in your system and the python installed as a package with QGIS. What to do if QGIS is not responding? The problem actually only occurs when a network drive is
on January 27, 2023
Sentinel 1 missing data
Geographic Information SystemsWhere can I find Sentinel-1 data? Users may discover and access Sentinel-1 data held at ASF through the NASA Earthdata Search tool. Is Sentinel-1 still active? Sentinel-1C and 1D are in development with Sentinel-1C set for launch in April 2023.Sentinel-1. Operator European Space Agency Applications Land and sea monitoring, natural disasters mapping, sea ice observations,
on January 27, 2023
Fine-tune label placement for road shields in QGIS
Geographic Information SystemsHow do I change the position of a label in Qgis? In QGIS, you can do this by changing the position of the labels to be rendered directly over the points they refer to. Open the Labels tab of the Layer Properties dialog for the places layer. Select the Placement option from the options list.
on January 27, 2023
How to add FP_WGS_84_IBCAO_Polar_Stereographic projection to QGIS?
Geographic Information SystemsHow do I add a projected coordinate system in QGIS? First, click on Settings > Project properties. Then, click on the box labelled as Enable on the fly CRS transformation. Next, select the projection which the current layer and all the subsequent layers will be using in common. How do I fix the projection in
on January 27, 2023
Correct installation of postgresql and postgis
Geographic Information SystemsHow to install PostgreSQL and PostGIS? Step 1: Install Packages for PostGIS Option 1 – Install on Ubuntu. Optional – Check Compatibility. Option 2 – Install on Vultr Managed Databases for PostgreSQL. On Vultr Managed Databases for PostgreSQL, the PostGIS extension package is already installed. Check Availability. Load the Extension. Check Installation. How to install
on January 27, 2023
Working with intersecting polar grids
Geographic Information SystemsHow do you solve for Polar intersections? To find the points of intersection of these polar curves, we’ll set them equal to each other and solve for θ. To find the values of r that are associated with these values of θ, we’ll plug the θ values back into either of the original polar curves;