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Geographic Information Systems : Recent Questions and Answers (Page 79)

Find answers to your questions about Geographic Information Systems or help others by answering their Geographic Information Systems questions.

Using FeatureCollection in Configurable Map Viewer?

I have searched everywhere online on How to use featureCollection in the operationalLayers of CMV. Is any sample code available?...

Asked on 08/18/2021 by geebengs

1 answer

AttributeError: 'Layer' object has no attribute 'metadata' from ArcPy with ArcGIS Pro

I am trying to get the metadata for each layer within each map within a ArcGIS Pro project (.aprx file), but get this error message: AttributeError: 'Layer' object has no...

Asked on 08/18/2021

2 answer

How to find Nearest point on line from a point cordinate in SQL server

I want to find out the nearest point on my road network which is a multiline string from a point with lat lon value. The below code I have...

Asked on 08/18/2021 by Sanjith

1 answer

QGIS - How to render QgsMapCanvas on QApplication's main window

I am working with C++, QT 5.11.3, Visual Studio 2015 and QGIS 3.7 I'm trying to develop QT c++ application that uses the qgis api. I want to display simple...

Asked on 08/18/2021 by tilt_y

1 answer

Extracting Vertices / Snapping to points from Vector Tile Service (VTS) Layer

I am using a new vector tile service for background mapping. I can select/interrogate individual objects from the vector layer with the info tool - but they're not recognised by...

Asked on 08/18/2021

1 answer

gdalsrsinfo conflict between command line and python console

I am working on a PyQgis application which loads WRF model output as a raster to overlay on a map which is in the Pseudo-Mercator projection. The WRF data...

Asked on 08/18/2021

1 answer

Where can I get British Agricultural Field Boundaries as Vector Data?

I am looking for vector data outlining the agricultural field boundaries in the UK (Specifically Scotland, England and Wales). I have tried all sources of open source data I can...

Asked on 08/18/2021 by Mathew Bayley

2 answer

GDAL code does not work on anaconda interpreter

I wrote a code that projects a raster to a new coordinate system.from osgeo import gdalfilename = r"C:UsersrslDesktopNew folderSN228122015_mosaic.tif"input_raster = gdal.Open(filename)output_raster = r"C:UsersrslDesktopNew folderSN228122015_mosaic_p.tif"gdal.Warp(output_raster,input_raster,dstSRS='EPSG:4326')The code works great on pycharm...

Asked on 08/18/2021

2 answer

Shapefile PRJ to PostGIS SRID lookup table?

I was wondering if there is such a thing as an shapefile PRJ to PostGIS SRID lookup table? Something that can translate the most standard shapefile PRJ definitions into...

Asked on 08/18/2021 by RyanKDalton

6 answer

How to calculate the accuracy of georeferenced aerial images in meters if the mean error is in pixels?

I have scanned aerial images taken shortly after WWII and have to georeference them and calculate the mean error. I use the Projective transformation so the error after transformation is...

Asked on 08/18/2021 by Pepe Pesh

0 answer

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