All Questions

I'm trying to call a function defined in a script contained in a Toolbox in ArcGIS. I have imported the Toolbox via arcpy.ImportToolbox. The scripts contained are recognized. I cannot call the ...

how to change pixel size from raster by value using pyqgis or python gdal ? i try to using SAGA GIS tool resampling : ext2 = rasterLyr2.extent() xmin = ext2.xMinimum() xmax = ext2.xMaximum() ymin = ...

I'm trying to include some button icons to a gui app using eric6 IDE, but I get error when trying to run the app. I've search a lot but no answer covers my problem. I created a resource.qrc in ui ...

I have two tables: filter_polygon and myGeometries In both tables I have geometry columns. myGeometries contains > 100 mln of rows. In both tables I have geo indexes like: CREATE INDEX ...

I'm trying to select polygons which centroids fall in another polygon: SELECT smaller_polygons.id FROM big_polygon LEFT JOIN big_polygon smaller_polygons ON ST_Within(ST_Centroid(smaller_polygons....

I have a polygon shapefile and a (merged) line shapefile (both are zipped). When I use Vector -> Analysis Tools -> Sum Line Lengths on these shapefiles, I get a layer with some of the LENGTHS filled ...

I have a GeoTIFF with the following meta information: PROJCS["WGS 84 / Pseudo-Mercator", GEOGCS["WGS 84", DATUM["WGS_1984", SPHEROID["WGS 84",6378137,298.257223563, ...

I have a project that I am working for my company which involves placing 450 points/markers on a map. In the past my company outsourced this work and the people who worked on it manually placed each ...

I'm new to GIS. Trying to use Finnish population data on 1km tiles available here: http://www.stat.fi/org/avoindata/paikkatietoaineistot_en.html The WFS service is here: http://geo.stat.fi/geoserver/...

I am trying to establish a QGIS3 custom application under Linux (Arch Antergos), according to the documentation (section 1.4.2) the following should work (but it doesn't). I executed the subsequent ...

I am trying to integrate live point data (worker locations) from Workforce for ArcGIS into a Javascript web app that I am building. The layer loads fine and displays on the map properly, it even ...

I'm trying to derive from MODIS 8 day composite MOD09Q1.006 product My formula follows the standard interpretation: EVI2 = 2.5(NIR-Red)/(NIR + 2.4*Red+1) I already know that MODIS bands for NIR ...

I currently have a shapefile with approximately 20 numeric variables. Several of these variables have missing values. As this is a shapefile I do not think using the median or mean as a form of ...

When I run the Calculate Locations tool, it inconsistently adds the Status field. It consistently adds the SourceID, SourceOID, PosAlong, SideofEdge, SnapX, SnapY, and Distance fields. I've tried ...

I am visualizing features from geoserver with OpenLayers using WMTS; I allow users to delete features using WFS-T; after a feature is deleted I would like for it to be removed from the map; however, ...

I'm trying to merge 12 .tif raster layers (raster -> misc -> build virtual raster), but keep getting this error: Loading resulting layers The following layers were not correctly generated./var/...

I am opening a .csv in ArcMap. In ArcCatalog when I open the properties I see that my first field is a text field (which is what I want) but when I open it in ArcMap the field is a double. 1) Why ...

I am working with ESRI ArcMap (10.2) and have set up a map page size for 40*60 inch. I created a pdf and printed, it looks good. Next I printed with lower size 11*17 but the place labels does not ...

In the past when I have tried to draw text that wasn't on a straight line, I highlighted the text and was able to use the 'Edit Vertices' tool in the Draw toolbar. For some reason when I highlight the ...

In QGIS, I want connect the lines that doesn't have spatial continuity and remove the small lines (red circles), but the area is extensive and it's not feasible to do this manually. Is there any way ...

I am trying to add a Feature Class from a Geodatabase Dataset to an MXD and save a copy like this but I am getting following errors on each methos import arcpy import os arcpy.env.workspace = r"C:\...

I have installed the version 2.18.24 in QGIS and apparently the plugin 'Digitizing tools' does not include the feture 'add ring' but it was replaced by 'fill ring with a new feature'. However, somehow ...

I am trying to replace/rename feature Classes in a dataset like this import arcpy import os arcpy.env.workspace = r"C:\\GDBs\Delaware.gdb\Kent" fcs = arcpy.ListFeatureClasses() for fc in fcs: ...

I do not manage to install QGIS on my windows 10 machine using the osgeo4w installer. During the installation I get this message: At the end of the installation I get this message: And when I ...

I'm looking at MODIS Chlor-a data. When comparing the data in GEE with downloading the file and looking at the measurements using SEADAS, I see the data does not match. Could anyone point me at why ...

I want to fill a set of polygons with png pattern. Here is an extract of my code : var canvas = document.createElement('canvas'); var context = canvas.getContext('2d'); var pattern; var imageObj ...

Currently I am working on a fictional map which had to be rectified, therefore the georeference I used was not important(?). However, as a follow up I had to draw some polygons over a .tiff image and ...

I m filtering using a Qgsexpression : filterexpression="\"date\"<='{}' AND \"date\">='{}'AND \"nom\"='{}' AND \"id_serie_type\"='{}'".format(date2,datee,nompointeau,serietype) expr = ...

I want to clean up a calculated flow distance raster and need some ideas on how to do it. As you can see in the picture, there are some pixels along streets and rivers (gray) that show connection (...

I would like to use the information from the Swedish SMHI related with their hydrological model elements (catchment areas) that have a Containment hierarchy structure, each element has the information ...

I'm using GeoServer 2.14.0 and I am trying to upload a couple of css and png files to the workspace. For that purpose, I'm using the /resource/ rest API. The files are uploaded - they are saved at the ...

I am dealing with a line layer which I am unable to import properly into GRASS. After some work solving dangles and invalid geometry issues I managed to import it, nevertheless when I try to use v....

When I run the script below, I get features as ordered by id as expected. layer = iface.activeLayer() # getFeatures() ids = [f.id() for f in layer.getFeatures()] print(ids) # OUTPUT: [0L, 1L, ..... ...

I'm a little confused on this topic. I need to put 2 SAR images into same coordinate grid. In ESA SNAP tool, there are 2 options: coregistration: Radar->Coregistration->Coregistration collocation: ...

I try to read data(UTF-8) from file > from nltk.tag import hmm >train_data = open('train.txt','r', encoding='utf-8') #trying to read data such as ('Lahore', 'NEL') > trainer = hmm....

I would like to calculate the slope value in %, but I don’t want to have any negative values. If there are negative values in the slope field, I would like to multiple them by -1 and if not, multiple ...

In QGIS 3 there are a number of useful vector tools available via GRASS functions. However, the output of many of these only contain 'cat' attribute in their output. For example, if I run the routing ...

I am trying to identify parcels with enough space for an additional building, and one of the parameters for this is: there needs to be a space of at least 9' x 10' available to fit the additional ...

I have a polygon shapefile where each row represents a sampling grid cell, and each column represents a species, which may be either present or absent in each cell. I need to export one map for each ...

I'm looking for a way to delete any vertices from polygons that don't intersect points in a point feature class. For example, I have PLSS sections and I want to eliminate any vertex that doesn't fall ...

I use a shapefile (rain.shp) with a bunch of columns (rain_1979, rain_1990, rain_1991, ..., rain_2015). I would like to transform every column of the shapefile into a different raster using the ...

I am trying to reproduce some pre-processing steps of night time images. I am trying to calculate the HEP step which takes the average of pixels either side of the pixel of interest, in the vertical ...

I need a function to do this: Take min and max "time" values where "selection" is equal and assign those values to all the registries within the range of time. Moreover, this function should be ...

I am trying to set up a folder called 'November' on NEXTGIS such that I can add multiple web maps into subfolders called 1,2,3,etc over time. I want to give a web address to a coworker for the folder '...

I have a map in arcgis online with point data. Each of these points shows houses that have been destroyed by time. We have a wiki that tells the history about these houses, so I was wondering if there ...

I'm setting up a geoserver and when I want to export the shape in a ZIP the shape is totally weird. The table is ok and when I preview in openlayers it also OK. Geoserver verion is 2.12.1 Original ...

Working in QGIS, I have two polygon layers: Building Footprint Polygon Layer Parcel Polygon Layer These two layers have a matching field in the attributes known as "Parcel Number". I would like to ...

I have a problem with executing an arcgis python script: Executing: acpcanadaScript "C:\Users\User\Documents\miniprojet\test\testzone d etude.tif" C:\Users\User\Documents\ArcGIS\Default.gdb\...

I'm uplifting a map to NEXTGIS and I get the errors: Response status code is 502 {"exception": "ValidationError", "message": "GDAL library was unable to open the file.", "attr": "source", "serializer"...

This is carrying forward from the previously asked Creating Polyline shapefile from text file using ArcPy? With further insight from a colleague, I have the following code that I feel is a good ...