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36 views

Distance between two points is not proportional above or below the Equator

I am trying to develop a tool that would find a point (longitude, latitude) that would be located a chosen distance away to the left from given point using Python and pyproj. I am not very familiar ...
-1
votes
0answers
13 views

Creating grid cells with a specific measurement [duplicate]

I have a shapefile (of a country). I want to create grid cells of equal measurements for the entire shapefile (for example, 10km by 10km or 0.1 by 0.1 degrees). How can I do that? I am using ArcMap ...
0
votes
0answers
18 views

Importing a CSV with GEOJSON column in QGIS

I have CSV files and each file has a geometry column using GeoJSON (some are polygons, some are lines and points). How can I import those files in QGIS3? ID polygon additional information point 1 ...
1
vote
0answers
19 views

st_3dshortestline equivalent in Python 3

I have two geopandas Dataframes with 3D geometry. I could transform it in any other data type it could be more easy to use. I would like to know if there is something similar to the st_3dshortestline ...
0
votes
1answer
14 views

Do I need to generate a JSON request to send data to Waze when using Road Closures (ArcGIS Solutions for Local Government)?

We are new to the Waze for Cities program. Currently, I am trying to get information regarding how to submit road closure data to Waze using Road Closure solution. I read all the documentation for ...
0
votes
1answer
21 views

Will Esri’s Road Closures solution perform a reverse geocode to get Waze street names?

We are new to the Waze for Cities program. Currently, I am trying to get information regarding how to submit road closure data to Waze using Road Closure solution. I read all the documentation for ...
-1
votes
1answer
16 views

Do I need to be Level 3 editor to send data to Waze using the Road Closure solution from Esri's ArcGIS Solutions for Local Government?

We are new to the Waze for Cities program. Currently, I am trying to get information regarding how to submit road closure data to Waze using Road Closure solution from Esri's ArcGIS Solutions for ...
1
vote
0answers
9 views

Does gdalwarp resample when calculating geoid correction?

I wanted to perform a geoid offset correction to a DEM and saw this really useful post: Vertical Datum conversion of a raster with gdal I noticed that although they use gdalwarp, they do not specify ...
0
votes
0answers
25 views

PostGIS with GeoJSON: `geometry` v. `geography`

Does the GeoJSON spec imply or strongly suggest that PostGIS geometry type should be used over geography? Looking at section 3.1.1 I am seeing that In other words, every point on a line that ...
1
vote
0answers
13 views

Splitting polygons with multiple lines

I work in an Architecture Analytics firm where all our internal representation of floorplans is based on shapely. We have some open spaces (typically kitchen/living room, but also office space) that ...
0
votes
1answer
25 views

WorldPop Google Earth Engine Mapping

I would like to map with palette and definition used in the example of "old" WorldPop data as in the image bellow (https://developers.google.com/earth-engine/datasets/catalog/WorldPop_POP) the "new" ...
1
vote
0answers
13 views

Specify the adminsitrative level in QuickOSM

I am using QuickOSM to download the boundaries of cities into QGIS before saving each city data as a GeoJSON. QuickOSM enables the Key (in my case, 'boundary') and Value ('administrative) to be ...
0
votes
1answer
27 views

Export a map into a useable format for a design software - QGIS?

I have a general map of the Mediterranean Sea, showing all the countries I've considered in a study, with watersheds etc. I've tried to make it look nice, but I think it could do with a bit of extra ...
0
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0answers
46 views

Where can I find our Waze for Cities program ID in the Waze partner dashboard? [closed]

We are new to the Waze for Cities program. Currently, I am trying to get information regarding how to submit road closure data to Waze. According to the Road Closure documentation, in order to share ...
0
votes
0answers
26 views

IMAGEMOSAIC ADD Store -> Could not list layers for this store --> only with some GEOTIFF

I'm trying to setup a geotiff folder inside ImageMosaic plugin after following this https://docs.geoserver.org/latest/en/user/tutorials/imagemosaic_timeseries/imagemosaic_timeseries.html Using the ...
-1
votes
0answers
37 views

ArcPy - Creating and showing Dimension Feature for a selected polgyon to shown the length of each side

I am new to development in ArcPy. I need to display the length of each side of a polygon using Dimension Feature, for doing this exercise I was planned to take the XY co-ordinate of each polygon ...
0
votes
0answers
9 views

Convert and set projection from h5 file

I want to save georeferences readed from input data to output data. I don't want use copy georeferences because input data is in .h5 format and georeferences was read from metadata. I use GDAL and C ...
0
votes
1answer
41 views

Link QGIS CSV / Excel with raster layers

I have the following problem. I want to link a value from an Excel file to a raster layer. Uploading the Excel file and linking to other vector layers via properties -> linking is no problem. However,...
0
votes
0answers
15 views

When carrying out spatial point pattern analysis on my point files I get an error for standard distance

How to fix an error with standard distance in spatial point pattern analysis. When performing spatial point pattern analysis QGIS 3.4 is only carrying out the mean point calculation correctly and ...
1
vote
0answers
26 views

Tenant isolation in SaaS product based on PostGIS - do the same concepts as PostgreSQL apply?

We're working on two different GIS apps and we're a bit torn around how to provide a level of tenant data isolation on our GIS systems. System A would need to have strong tenant data isolation where ...
2
votes
1answer
27 views

OpenLayers declutter styling

declutter does not working as it should be for point geometry, it should avoid overlapping labels and not styling format or geometry. when I set it true for points, points are starting disappear when ...
0
votes
0answers
14 views

Obtaining Sentinel raster for API

I need to download some Sentinel images from scihub-Copernicus to use them on an application. Does anyone know how to obtain the sentinel raster for a region (I have the polygon coordinates) using ...
0
votes
1answer
35 views

Retrieve data from multiple selected cells in QTableWidget for a QGIS Plugin?

I am creating a plugin which shows the list of location of vector/raster layers. I am using QTableWidget to show the data. When I select one row/cell and click a QPushButton it opens the specific ...
1
vote
1answer
54 views

Finding Z value difference between consecutive GPS points

I'm trying to abstract a value from a column with the next value from the same column in QGIS by using python. I have a table with points with X,Y,Z from GPS tracklog. I sort them by time and I'm ...
0
votes
0answers
6 views

What is the time interval for daily GPM IMERG product? 0:00 to 23:59 local time? UTC?

I'm processing a bunch of GPM IMERG Daily products and comparing to historical station data. These old met stations report daily precip from 9am to 9am of the following day. So I'm wandering what is ...
0
votes
0answers
13 views

ArcGIS processing or frozen? [closed]

When the ArcMap (10.6) progress bar is not moving, and the Windows task manager says that ArcMap is not responding, but continues to use more and more RAM, does this mean that ArcGIS really is frozen, ...
1
vote
1answer
26 views

Fill null pixels resulting from Landsat 8 SR image cloud masking (Earth Engine)

I want to collect cloud-free surface reflectance images using a cloud masking function and then compute NDVI. However, the output image has some transparent areas that can't be used in the next step. ...
0
votes
0answers
20 views

R: Why is my map including the entire world WSG84 space, when all I want plotted is New Zealand?

This seems to be a very easy problem to solve, but about two hours of searching hasn't led me to the answer. I have a GIS file that I downloaded in WSG84 ESPG:4326. I read in the file using readOGR. ...
0
votes
0answers
17 views

Public MGRS 10km polygons dataset?

I am looking for a worldwide vector dataset of the 10km MGRS grid. What I am after is the grid polygons, with the corresponding grid codes present in the attribute table. On the website of NGA I ...
0
votes
0answers
10 views

Spatially intersect a Networkx graph

I have a Networkx MultiDiGraph for a whole city, containing street and intersection data. I also have a GeoDataFrame containing polygons outlining the neighbourhoods of that city. I would like to use ...
2
votes
0answers
51 views

What is a good alternative to OpenMapTiles? [closed]

I want migrate image tiles (osm2pgsql, mapnik, etc.) to vector tiles. I tried OpenMapTiles. But the documentation is bad. To start a local test system is no problem, but create a own server and own ...
1
vote
1answer
18 views

PHOTOMETRIC tag not producing expected result

Code takes a netCDF4 file and converts the data to GeoTiff: import numpy as np, sys from osgeo import gdal from osgeo import osr import netCDF4 f=netCDF4.Dataset("mydata.nc") time = f.variables["...
0
votes
3answers
29 views

CSV file imported in QGIS 3.4 Madeira in map plots points at wrong places

I import a list of points from a CSV file: No of school east north School 1 98,431388 22,883583 School 5 97,608888 22,854361 School 6 97,901388 22,549805 on a map: but the ...
1
vote
1answer
20 views

R - Find “n” closest points to each point in SpatialPointsDataFrame

I am working with a dataset that is similar to this one: library(raster) library(sf) # Define CRSs crs.latlon <- "+init=epsg:4326" crs.sirgas <- "+init=epsg:5880" # define edges in somewhere ...
0
votes
0answers
17 views

After DXF conversion, layer with same coordinate and projection not visible

I've converted a DXF file to shp (using another DXF importer/convertor plugin). In QGIS this shp will open fine if standalone but is not visible when added to a project with other shapefiles. The xy ...
0
votes
1answer
28 views

Map panning using mouse wheel in OpenLayers 3+ [closed]

How to achieve functionality that user could scroll through map by pressing mouse wheel and dragging map like he can do it by pressing left mouse button?
-1
votes
0answers
25 views

Creating .tpk file in ArcGIS Pro

I need an offline map for my desktop app. I downloaded ArcGIS Pro trial version however when I google create .tpk using ArcGIS Pro I always face with ArcMap application. I could not find any video or ...
-1
votes
0answers
9 views

Fetching map tiles with custom zoom levels given lat/long coordinates

I have a list of latitude/longitude coordinates. How can we generate map tiles for custom zoom levels? I would like to somehow specify the dimensions of the output tiles. Please suggest tools or APIs ...
2
votes
1answer
31 views
+50

How to calculate and export tasseled caps from MODIS collection in GEE?

I would like to calculate and export the brightness, greenness and wetness tasseled caps for the MODIS MCD43A4 V006 collection based on the Lobser coefficients, but I have no idea how to do it. var ...
0
votes
1answer
23 views

Can I set a rule in the layer style that specifies the BBOX I need?

The server is very slow to produce an image when the client requests an image at a scale of 900 layers but only one layer has the requested bbox. I think that GeoServer loads information about all the ...
0
votes
0answers
17 views

Crop `vrt` by vector-geometry with gdal

Is it possible to crop a .vrtmosaic to a vector-geometry? I have a .vrt-file which is a mosaic of various sentinel2-scenes. For me it seems to be more efficient to already crop and mask (set ...
0
votes
0answers
14 views

Is the QField software integrated with the SPACE software from SP20 receivers (Spectra Precision)?

I have a SP20 GPS receiver from Spectra Precision. Spectra Precision has developped a software, named SPACE, which allows to third party companies to integrate the SP20 GPS data into their own ...
0
votes
0answers
26 views

Leaflet draw - Edit event after editing existing feature

I was inspired by this post How to edit an existing layer using leaflet? I can click on an item to make it editable. But this does not "activate" the drawControl to allow me to click save or cancel, ...
0
votes
0answers
15 views

Extract landsat pixel values from a region into a table in Google Earth Engine [closed]

I am trying to have a code that I could use to extract pixel values from particular region (e.g. a 100 m buffer around a coordinate) from a Landsat 8 time series image collection in Google Earth ...
0
votes
0answers
29 views

Searching equidistant point from sets of points using ArcMap

I process lunar impact craters. At this stage each of them has about 16 points on their rim, they all have crater's ID in their attribute table (which has all points for all craters). Now I want to ...
1
vote
0answers
17 views

Adding border on icons in openlayers

I am trying to add borders to the icons in open layers and I am able to do so but when i try to increase the thickness of the border, the border is not uniform and at one side becomes larger than ...
-1
votes
0answers
18 views

Dynamic Map Service seems too slow

I have an issue with published polygonal Map Services. I have around 30 Map services in a single web app (based on JS). Max 10 of these map services will be viewed simultaneously. I find it slow to ...
1
vote
0answers
36 views

How to covert a GeoTIFF DEM to a standard raster format without losing quality or resolution

I'm working on a project, a spin-off of my graduate dissertation, to digitize LiDAR data of a portion of Tampa Bay (20x20 km^2 at 1:1 scale) into a Minecraft map. Ideally I want not just accurate ...
0
votes
0answers
13 views

init.js:36 GET https://js.arcgis.com/3.28/esri/WebMap.js net::ERR_ABORTED 404

I got above error in my browser developer tools window. This happened when I added esri/WebMap to my widget.js file of custom widget I was building.
-1
votes
0answers
12 views

Atmospheric correction of a hyperspectral image error

"I try to execute the atmospheric correction of a hyperspectral image in the sending software and I get the following error:" Yo trato de ejecutar la correccion atmosferica de una imagen ...

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