Category: Geographic Information Systems

Selecting the correct projection for an imported .csv file

What is the correct format for a CSV file? CSV , or Comma-separated Values, is an extremely common flat-file format that uses commas as a delimiter between values. Anyone familiar with spreadsheet programs has very likely encountered CSV files before – they’re easily consumed by Google Spreadsheet, Microsoft Excel, and countless other applications. Which is

Pairing specific raster footprints

How do you combine two rasters together? Open the Mosaic To New Raster tool by navigating to ArcToolbox > Data Management Tools > Raster > Raster Dataset. Insert the raster files. Select the output location. Specify a name and extension for the output. Specify the pixel type. Specify the number of bands.   What is

QGIS3: How to set an attribute value?

How do I change attribute value in QGIS? Right click the layer in the Layers Panel then click the Open Attribute Table menu option. Click the Toggle Editing Mode button. Click the New Field button. Input the field’s Name, Type, and Length, then click the OK button. Why can’t I edit my attribute table QGIS?

Create buffers from points by attribute

How do I create a buffer around a point in Arcgis? Creating a buffer around a feature Click the Edit tool. on the Editor toolbar. Click the feature around which you want to create a buffer. Click the Editor menu and click Buffer. Type the distance in map units for the buffer area around the

Difference between notations of WKT format: ‘POINT()’ and ‘Point ()’

What format is a WKT in? Well Known Text (WKT) is an Open Geospatial Consortium (OGC) standard that is used to represent spatial data in a textual format. Most OGC-compliant systems support Well Known Text. Spatial functionality in SQL Server 2008, 2012, and SQL Azure can easily convert between a spatial object in the database

Join line to multiple points

What is the difference between join and spatial join? A JOIN simply pairs up rows based on whether a condition is true. In a spatial join, the condition is just a geometric operation on geometric data (e.g., two polygons must intersect). This does not change with spatial queries.Nov 9, 2014 What is a spatial join?

Errors Clipping a Vector: Invalid Geometry

How do you fix invalid geometries? On QGIS, type fix geometries on search tab. On Fix Geometries window, select your invalid geometry shapefile as the input. On the output options, select where you want to save and type the name of the fixed shapefile you are about to obtain. On QGIS, select input and output

Does the number of decimal places in coordinates affect the speed of rendering of the features on a Leaflet map?

No, the number of relevant decimal places used in numbers do not matter.  How many decimals do coordinates need? So, when it comes to GPS data, you need coordinates out to at least five (5) decimal places to be useable in terms of locating and subsequently evaluating incremental speeds between points. How many decimals are

Grid clipping issue in Layout

Why is my grid overflowing? The horizontal overflowing of the table occurs if: The scrolling of the Grid is disabled, and. The columns cannot fit in the available horizontal space that is determined by the width of the Grid parent. How do I stop my grid from expanding? Grid items have an initial size of

How to define the angle of points on slope?

How do you determine the angle of a slope? To get the slope measurement in degrees, subtract 90 degrees from the new vertical angle. In this example, the new angle is 120 degrees, so the slope angle is 30 degrees (120-90 = 30). To be as accurate as possible, you should sight along the protractor’s

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