Category: Geographic Information Systems

Suppress warnings in Python/OGR

How do I stop user warnings in Python? If you want to stop the process for warnings like exceptions, set action of warnings. simplefilter() to ‘error’ .  How do I turn off NumPy warnings? We will use “numpy. seterr(all=’ignore’)” to suppress all floating-point warnings.  How do I turn off warning messages in R? We can

Calculate water area of Sar images of Google earth engine

How do you calculate the area of a classified image in Google Earth Engine? Area Calculation for Images (Single Class) pixelArea() function. This function creates an image where each pixel’s value is the area of the pixel. If the image pixels contains values 0 or 1 – we can multiply this pixel area image with

Batch reclassify rasters with different elevation ranges

How do you reclassify raster data? Click the Input raster dropdown arrow and click the raster with the values you want to reclassify. Click the Reclass field dropdown arrow and click the field you want to use. Click the Classify button. Click the Method dropdown arrow and choose a classification method to reclassify your input

Styling OSM data with OSM-Carto

How do I customize OpenStreetMap? Styling a map: set custom colors and font settings Open map style from a link. Click the “Open” menu to choose a map style you will you as a basis: Customize your map. Download and use the generated map style in your project.   How to use OSM data in

Clustering in ArcGIS – Fixed size

What is cluster tolerance in ArcGIS? A cluster tolerance is used to integrate vertices. All vertices that are within the cluster tolerance may move slightly in the validation process. The default cluster tolerance is based on the precision defined for the dataset. The default cluster tolerance is 0.001 meters in real-world units. How do I

Working with irregularly spaced gridded NetCDF data in R

How to read a NetCDF file in R? You can read netCDF data in R using the ncdf4 package. You can use the nc_open function from the ncdf4 package to open a connection to a netCDF file.  How to extract data from NetCDF file using R? How to convert NetCDF to CSV using R? Install

Exporting climatic tabular data stored in TIF file into CSV

How to convert TIF to CSV? How to convert TIF to CSV Open our free TIF to CSV converter website. Click inside the file drop area to upload TIF file or drag & drop TIF file. Click on Convert button. Download link of result files will be available instantly after conversion. You can also send

Putting graveyard online in GIS?

How do you input a paper map into a GIS environment? Scanning, Manual digitizing and Automatic digitizing are the methods may be used to input paper maps into a GIS. Paper maps are static depictions of land features as they existed at the time they were made. How to do GIS mapping? The basic controls

Iterating in ModelBuilder to Generate Output Files in Source Folder?

How do you iterate in Model Builder? Quote from video: And you'd run a model by double-clicking right and then you do your inputs like a tool. The model we're going to build here as an example we're going to build it here in right in our little place. How do I export a model

Projecting Azimuthal Equidistant global map into circle using QGIS

How do I change the projection of a map 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 is an azimuthal map projection

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