All Questions

0
votes
1answer
17 views

How to access Home directory of ArcMap?

I want to access to a directory and set that as a arcpy.env.workspace in my Python Script Tool. However, this workspace depends on users so I cannot just use my own folders. Is there a way to access ...
1
vote
1answer
10 views

Customized Albers Equal Area Conic projections are cosmetic only or do they affect area calculations too?

I will be doing area calculations for 100+ countries using country polygons taken from GADM, a database of global administrative areas. I am using ArcGIS. The GADM data is in WGS84 and is unprojected. ...
0
votes
0answers
10 views

QGIS how do I add my own marker?

Looking to add my own marker. I have an Icon in SVG format that I would like to use. Using QGIS 3.4.4
0
votes
0answers
11 views

Can't close QGIS

I am very new to QGIS and I have been doing tutorials to try and learn the software. I can't close QGIS now. It says I have two active tasks running. I see the one task as "calculating field". When ...
0
votes
1answer
33 views

Where is the best place to ask a question about the Open Data Cube

The OpenDataCube is an open source project that is aimed at making it easier to work with large volumes of earth observation data. The ODC Steering Council is the technical governance group who lead ...
0
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0answers
4 views

How to add feature layer to map created using esri-loader?

I have an Angular 7 app created with CLI. It has a component that uses esri-loader to create a map. That works fine. Now I want to add a feature layer to the map but cannot figure out how to do it. ...
0
votes
0answers
5 views

WMTS as a service?

I am looking for way to serve point cloud images (LiDAR etc.) to QGIS in a simple fashion without setting up a Mapserver/Geoserver etc. Does anyone know of a web based service that can take these ...
0
votes
0answers
10 views

Create 3mx3m Vector Grid on Worldmap with equirectangular projection in QGIS

I would like to create a 3meter x 3meter Raster Grid on a Worldmap in QGIS. I am fairly new to the whole topic but I have found out that the equirectangular projection should be the most accurate, ...
0
votes
0answers
2 views

How to enable tracing in QGIS 3 beyond applications for adding polygon purposes?

I have used the enable tracing feature in QGIS 3 to create new polygons (Add polygon feature), and it works very well. However, i have not been able to use it for other purposes beyond that, for ...
0
votes
0answers
11 views

Visualizing R-tree in Python?

I am trying to visualize R-tree in Python. Are there any existing packages for this?
0
votes
0answers
7 views

GeoServer: Adding remote WMS to GeoServer

I'm fairly new to GeoServer and I'm trying to load a remote WMS onto my work's geoserver. However, when I try to enter the WMS URL I get an error message that reads "Connection test failed: Unable to ...
0
votes
0answers
12 views

Coordinate system transformation deviation

I'm having the same problem as described in this Question from September 2018. Has it ever been answered satisfactorily? I'm attempting to transform from EPSG 3785 to 4326. The X coordinate output is ...
0
votes
0answers
12 views

Transfer markers from MyMaps to QGIS?

I need to georeference a list of places. Unfortunately, my original file doesn’t contain addresses, it is made up of a list of famous locations, such as the St Mark Basilica, Miramare Castle, ...
0
votes
0answers
12 views

CRS not defined for ECW created in FME

I have a simple translation, from GeoTIFF to ECW in FME. It creates the file just fine, but it does not define the CRS for the ECW. When loading the ECW into QGIS I have to pick the CRS. When ...
0
votes
0answers
15 views

Collections.DefaultDict(list) : Why is my data a string?

While creating a defaultdict(list) containing street names, x and y coordinates, my x and y entries are converted to strings. This prevents me from doing calculations on them. I've been looking around ...
0
votes
1answer
19 views

Adding state map using QGIS?

I'm new to QGIS. I'm trying to add a map just of the State of NJ. I figured out to load Google street map, but that's as far as I got. My goal is to get a Map of NJ with its counties. I found a few ...
0
votes
0answers
11 views

Automatically select a feature from another layer based on shared attribute in QGIS

I have two shapefiles, A (polygons) and B (points), and I need to select all features from shapefile B that have the same attribute (for example, "Name") as shapefile A, and I need to do this ...
1
vote
0answers
7 views

Why are there holes in the resulting map of median reflectance values from Sentinel2 imagery on GEE?

I don not understand why are there holes in the resulting map of median reflectance values from S2 imagery on GEE and how do I fix it? Also, why are all the clouds not getting masked? //Function for ...
0
votes
0answers
5 views

Experiencing Error 80070035: Network Path was not Found?

I am trying to install ArcGIS for Server 10.4. I am experiencing an error which states Error 80070035: Network path was not found as outlined below: https://support.esri.com/en/technical-article/...
0
votes
0answers
8 views

Dataset of lines at n miles from the coast

I'm using Folium to generate some interactive maps with ocean data. One of the restrictions I am facing is that the objects, I plot has to be at-least at 5, 6, .., n miles from the coast, hence I am ...
-2
votes
0answers
4 views

what is the best resource to learn postgis, used with django in Linux? [on hold]

I am working on and app that is required to filter the list of the houses in the database based of weather they are inside a certain polygon or not, my backend is Django and the data base on server is ...
1
vote
0answers
17 views

Fix an export for loop that recently stopped working?

I have created several for loops in my GEE script. These loops worked fine up until a week ago (about 4 months old). I receive the following error in my console when the code tries to run the for ...
0
votes
1answer
19 views

arcpy.da.SearchCursor storing data in a list with a query

I am currently working with a database that hold street names, x and y coordinates and many more fields. I would like, through a search cursor, to store the x,y coordinates in a separate list for ...
0
votes
1answer
14 views

Create an Android app with an offline map using OpenStreetMap

My app will have only one mountain map. I need to make routes, get location, attach markers on it. I want to use GeoJSON or XML if is possible, if not I will accept any solution.
0
votes
0answers
4 views

gdal2tiles.py output tiles changed on new install. geodetic image overlay shifted

given a global coverage image at .04 deg from 60N to 60S and -180 to 180 I previously generated tiles for google overlay using gdal2tiles.py once I determined the right syntax/args to use. The image ...
0
votes
0answers
21 views

ArcGIS 10.5 Python script integration to 'script/tool' not outputting data

In ArcGIS 10.5 I have a python script that works well in the python window, however, I am trying to integrate it in a tool, mainly to make use of the arcpy.GetParametersAsText() input feature for the ...
0
votes
0answers
8 views

Get exact address of mobile device using geocoder

I have been trying to get exact address of mobile device using geocode. Here is my code function showPosition(position) { debugger; console.log("Latitude: " + position.coords.latitude + "<br>...
1
vote
0answers
11 views

GeoServer and GeoWebCache: How to find and fix source of repeated seed.TruncateTask for empty string errors?

Googling this issue is getting me nowhere so I thought I'd cast a wide net here in the hope of getting an actionable lead on this.. Our GeoServer instance is configured for GeoWebCache. While ...
0
votes
0answers
13 views

I can not Add GML Layer in OpenLayers 4

I use openlayers 4 and gml layer is file type, but when i add gml layer to map using ol4, i have a ploblem. Gml is polygon but it appear as some point in map. Can not anybody help me? Below is my ...
0
votes
0answers
7 views

Geopandas to_file() gives an error regarding fiona.drivers(). Is it possible to work around this?

I'm using geopandas to get WKT and coordinates from a database: df = pandas.read_sql(con=conn2, sql=test_query) df['Coordinates'] = df['WKT'].apply(lambda x: wkt.loads(x.read())) gdf = geopandas....
0
votes
1answer
7 views

Earth Engine, Identify overlapping features

I have a feature collection of badly drawn geometries (a subset is shared with the script). I need to identify the features that overlap in some way (for later processing). The idea was to map each ...
4
votes
2answers
34 views

How do I limit the number of rows that are loaded in a QGIS attribute table?

Every time I accidentally open an attribute table for a large table in QGIS it takes ages to load. The data is in Postgres, but that doesn't help when the table is trying to load millions of features. ...
0
votes
0answers
29 views

Calculating distance between two pairs of coordinates (latitude/longitude)? [on hold]

For example, I have two pairs of coordinates: (103.82 W, 32.024 N) and (104.2 W, 32.587 N). I'm trying to figure out how to calculate the distance between these two points and then represent that ...
1
vote
0answers
13 views

Configuring QGIS new OAuth2 support for WMS or WFS

Has anyone successfully configured QGIS new OAuth2 support for a WMS or WFS service? I have an ArcGIS 10.6.1 service published as a WFS service but cannot get past the OAuth2 authentication.
0
votes
0answers
5 views

Clipping TIFF raster image using bounding box with GDAL in Java

I would like to know how can I clip a raster image using a bounding box with GDAL in Java. I can do it with the binary file gdal_translate: gdal_translate -projwin -75.3 5.5 -73.5 3.7 -of GTiff ...
1
vote
3answers
62 views

Can I reorder the coordinates of a line when importing into QGIS a WKT linestring?

I managed to import a csv file containing lines in QGIS but unfortunately the x y aren't in the correct order. that is, the csv has a field where there is a sequence of lat (y), lon (x), while qgis ...
0
votes
0answers
10 views

Interactive trigger for external image viewer?

Is it possible to navigate from point to point with a shortcut on the keyboard and interactively (tracking) display the embedded photos at the point locations in an external image viewer? I could do ...
0
votes
0answers
28 views

ArcMap QGIS different distortion

I have a problem with a shapefile (EPSG:31287 MGI_Austria_Lambert). I tried to solve it on my own, but I just have no clue as to what's the error. So I use a basemap from basemap.at (WMTS: https://...
1
vote
0answers
10 views

When building a VRT in QGIS, which input raster will be assigned which band number?

I don't understand how QGIS assigns the band numbers to the input rasters for a virtual raster catalogue. Unfortunately the bands in the compiled virtual raster catalogue will only have the names "...
0
votes
1answer
13 views

ESRI ArcGIS Runtime for .NET view non ESRI Vector Tiles

I am trying to view some vector tiles hosted outside of ArcGIS Online/ArcGIS Enterprise on my own tile server (Flat non indexed tiles). I have been unable to add the Tile Server to the .NET Runtime ...
0
votes
0answers
10 views

How read a raster [Tiff] file to get the correct values for every band? [duplicate]

I am trying to read a raster tiff [RGBA] file with GDAL in [C++], I can load the file, get the number of channels, the size of the bands and the metadata, but when I try to extract the Band [R, G or ...
-1
votes
0answers
10 views

Layout not exporting [on hold]

When attemptng to export my layout as jpeg or pdf, I get the message that the layout has been successfully exported, along with the path, but nothing shows up in the destination specified. (After each ...
1
vote
0answers
19 views

Modeling iterative processes

in the QGIS Version 2.X there was an Iterative Button from the algorithm also available for the algorithm used inside the processing modeler. Actually I use the version 3.2 and 3.4 and can not find it....
0
votes
1answer
15 views

Get progression bar into PyQGIS 3 standalone script

When I run a treatment inside QGIS with Processing toolbox (native algorithms) I get a progression bar : Is there a way to use this percentage inside a standalone PyQGIS script? I searched in the ...
0
votes
0answers
17 views

ArcGIS Pro saving blank or jumbled PDFs

I am working on Chapter two of "The ArcGIS Book" (Harder & Brown) in ArcGIS Pro and am having problems saving my map as a PDF. When I click share -> export and save as a PDF the saved file is ...
0
votes
0answers
19 views

Generating a single coordinate per household cluster based on incomplete household GPS data [on hold]

I'm working with survey panel data, about 20k observations (individuals), grouped into about 3800 households. I have GPS coordinates for ~50% of households (due to connectivity issues in remote areas),...
-1
votes
0answers
30 views

Drawing line with specified length [duplicate]

I’m working on QGIS 2.18.18 Las Palmas. I’d like to draw a line or I’ll determine its length first. How to do it?
0
votes
0answers
18 views

Why does QGIS / MMQGIS / Geocoding always show a connection error to Google Maps although I want to use Nominatim?

I am currently trying to geocode addresses from a CSV file using QGIS (2.18.22) via MMQGIS (2018.1.2) and the Nominatim Geocoder. Unfortunately there is always a strange error. Why does Nominatim ...
0
votes
0answers
13 views

Creating mapseries along a line with north up [on hold]

I've gotten a request to make a map series along a line with north up in the layout. I've made stripmaps before and they're great, but I can't see how I can still keep north up using it. I want to ...
1
vote
1answer
34 views

QGIS cumulative sum in attribute table

I have an attribute table in QGIS in which I would like to calculate the cumulative sum. The table is sorted by N (number of fatalities) and I would like to calculate the cumulative sum on F (...

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