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10 views

Catching a system exit caused by ArcPy in PyCharm?

Using ArcPy in PyCharm, I'm constantly getting Process finished with exit code -1073741819 (0xC0000005) in my RegionGroup loop. I have posted my code in a previous question (Process finished with exit ...
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0answers
9 views

Obter projeção latitude e longitude

I have a central point (with longitude) and I measure a radius (30º) degrees, I have a distance of 200 KM. Problem: know with precision what is the latitude and longitude of the point that is 200 km ...
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0answers
4 views

Adding multiple new values to MBTILES layer using `tile-join`

Using the tile-join function of tippecanoe, I have a MBTILES file with one point, and a CSV with one value to add to that point. This is what the CSV looks like: I am able to edit the MBTILES layer ...
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0answers
5 views

No sync geopackage raster layer to QFIELD

I have a problem with exporting raster layers stored in a geopackage, to a QFIELD project. I work with version 3.4.12 of QGIS and I have version 3.5.1 of QFIELD Sync installed. The process I follow ...
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0answers
10 views

OpenLayers.Format.WMTSCapabilities vs ol.source.WMTS

Struggling with getting a WMTS layer working using OL2. I have it working with OL3 but unfortunately I'm working with legacy code and it needs to work on OL2. Using OL3 (working) var xml = '...'; //...
1
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0answers
12 views

Reduce overlapping / close polylines to one line

I have a shapefile with multiple (often not perfectly overlapping lines). Attached is a picture of a typical situation found in the shapefile. I would like my output to have only one line (attributes ...
0
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0answers
5 views

Read an external HTML file/website or call Web Service from Google Earth Engine using JavaScript

I need to call either an HTML page from the web based tool or be able to comunicate with a web service. I tried using the function XMLHttpRequest(). However, the console prints the error "...
0
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0answers
5 views

Mapping a collection to extract monthly surface calculations to a table

I'm totally new using GEE and Javascript. I'm trying to calculate a monthly based time series of a lagoon surface area. Besides, I want to export the results to a .csv or similar to compute some ...
1
vote
3answers
21 views

How to create an “artistic” hillshade?

I came across some high res DEM and would like to create a quality hillshade. Target quality should be ESRI's world_hillshade as shown here: https://services.arcgisonline.com/arcgis/rest/services/...
1
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0answers
13 views

How to quantify relationship between points and polygons?

I have a set of points and a series of ellipses that I can overlay on the points. I want to quantify the extent to which each ellipse is potentially influenced by the points. I don't do much GIS work, ...
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0answers
9 views

Shifting in pixel after subsetting with gdalwarp

I am trying to subset multiple image to smaller Area of interest I have tried with gdalwarp in commandline but it causes shift in pixel after cropping/sub-setting image into smaller place. my code ...
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0answers
14 views

Iterating through feature classes in a geodatabase

I’m trying to create a model so I can iterate through some feature classes in my gdb. I remember doing it one time while working on wetlands with the US states, where I used the state boundary shape ...
1
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0answers
9 views

How to work with 20 m spatial resolution bands in Sentinel-2 Imagery Level2A GEE

I am using the following script to make a query of Sentinel-2 Imagery Level-2 with GEE code editor. // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ // Finding images in the ...
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0answers
10 views

How to put a watermark at Mapnik tiles?

Maybe I have to add new layer with my PNG watermark at XML style, but how? I already tried to change somthing at XML, but don't understand how to add one global layer.
1
vote
2answers
29 views

What CRS for a large scale analysis

I was wondering what CRS to use when focusing on a large scale area for an analysis. For example the Mediterranean Sea. I need to find the distance of each sea port from another. That means I need the ...
0
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0answers
7 views

How to geo-reference a level 1A satellite image to level 1B?

I have satellite images which are not geo-referenced. The metadata of images is below. name: 1235078921.68220448_sc00106_c1_PAN datetime: 2019-02-24T21:28:23Z gsd: 1.03381 bit_dpth: 16 Satellite ...
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0answers
4 views

Calculate statistics of raster based on plygon borders in google earth engine

I have a script in GEE that takes shepfile (sometimes with two polygons), classify it to 3 different classes and create one new layer with those 3 classes. I want to calculte statistic for each ...
0
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0answers
22 views

Is there a way to move multiple (1,000+) polygons and these out to the x,y, coordinates of a point grid? (As opposed to move each individually!)

I have a point square grid set up 10m x 10m / I have over 1,000+ building polygons that I would like to lay out in a grid form i.e. moving the building polygon to an x,y, of the grid. Ideally with the ...
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0answers
11 views

Unfinished Layer with QGIS Contour Plugin

I am using QGIS 3.4.13 Madeira on Windows 10 I have an issue with the QGIS Contour Plugin. I have two point layers, they contain about 45'000 points in the exact same locations. The only differences ...
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0answers
7 views

Reducing a multi-band image and keeping the bands

I would like to calculate the area of all non-zero pixels on multiple bands of an image. My idea was to use var areaImage = image.multiply(ee.Image.pixelArea()); To do that I will need an image ...
2
votes
0answers
12 views

OGR failing to unpack polygons and respective holes from shapefile

I'm trying to unpack shapefiles in Python (v3.7.4) using the GDAL-OGR library (v2.3.3). Each shapefile has only one feature containing multiple polygons with holes. They cannot be produced differently....
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0answers
7 views

How to convert SPL2SMAP_S data (available in .h5 files) to *.tiff files?

I had downloaded some data from https://nsidc.org/data/SPL2SMAP_S The description of the data is given in the page. Using an earthdata login, one can download the data. The data consists of *.xml and *...
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0answers
11 views

Trying to display a line grid in Massachusetts

I am currently attempting to make a line grid that overlays a Massachusetts Town Boundary shapefile. When I set the extents based on the coordinate number, it keeps being displayed in the ocean around ...
0
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0answers
19 views

No acceleration tab QGIS 3.10

I don't have the acceleration tab in QGIS: QGIS: 3.10.1-A Coruña Nvidia driver: 440.44 Graphics card: RTX 2070 super Cuda: 10.2.89-3 Operative system: manjaro Edit, i also don't see any option ...
1
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0answers
11 views

R {spdep} Get list of neighbors from nb object

I want to identify the specific neighbors of each polygon within a SpatialPolygonDataFrame from nb object. I know I gen get the number of neighbours by polygon id by card(nb), but how to get the list ...
0
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0answers
8 views

Is there any interoperability between GRASS and PCRaster?

After having looked at PCraster river network it seems that GRASS makes better work. But PCRaster is the best for building models. So is it really possible to use python-grass scripts for delineation ...
0
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0answers
8 views

Landsat L1GS product processing to change detection analysis ready state

At high latitude area of Svalbard Norway, one can find Landsat 8 data processed to L1TP level. With previous Landsat missions, this is not the case. Landsat 7 data are processed to L1Gt level and ...
-3
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0answers
14 views

Using sentinel 1 to estimate vegetation structures [closed]

I am currently a registered Master's of Science degree researching on the characterization of tree species in agroforestry landscapes. Therefore I would like to ask about more information regarding ...
0
votes
1answer
28 views

Downloading georeferenced maps from geoportals

Is it possible to download georeferenced maps from Havering London Borough and Adur & Worthing Councils portals, and if it is, then how? I tried to use http response (see picture below), however ...
0
votes
1answer
16 views

Apply transparency to a raster layer by using actions

i have a specific action to load an raster layer by clicking on it, however i need to know if is possible to open that specific file and automatically apply a style. My idea is when someone click and ...
-2
votes
0answers
13 views

Simulation of data from a population which is divided in clusters which are in turn divided in to strata in R programming from a uniform distribution [duplicate]

Population has 400 elements which has 10 clusters and each cluster has 5 strata.Of interest is to have data with missing values to be imputed nonparametrically...suppose we let y to be the survey ...
0
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0answers
19 views

Generating coordinates with attributes from a georeferenced map [closed]

I've got a (physical) hydrographic map that I'm intending to scan and georeference into QGIS. On this map are hundreds of point depths measurements and what I want is to obtain an array with the ...
-2
votes
0answers
20 views

How to simulate data from a population divided in clusters which are in turn divided in to strata in R from a uniform distribution [closed]

Of interest is to have data with missing values to be imputed nonparametrically...suppose we let y to be the survey variable and X be the the auxiliary variable.
0
votes
1answer
28 views

Perform calculations in GEE for each polygon in one layer [closed]

I have layer that contains many polygons. I want to run calcuation for each polygon in the layer so for each polygon I have the mean and the std. deviation and from this I can run calculation for each ...
1
vote
0answers
25 views

Batch import of DEM tiles (with shapefiles) into PostGIS creates non continuous contour lines

I want to import a large amount of ASTER DEM data into PostGIS (covering Europe). I use this script: https://wiki.openstreetmap.org/wiki/Contour_relief_maps_using_mapnik#Importing_ASTER_GDEMv2_data ...
0
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0answers
23 views

Using EPSG:2169 with Leaflet

I'm trying to use Leaflet with a specific projection EPSG:2169 (Luref, or Luxembourg). I saw that if I don't use a "standard" projection like WGS84, I have to use Proj4Leaflet and reference it to the ...
-1
votes
1answer
31 views

Seeking shapefile with count of restaurants in various cities

Where can I get shapefile with count of restaurants in various cities? I want to get the data and do clusters with accessibility of each restaurant
0
votes
1answer
11 views

Give a specific value to mask layer

I have code that creates 3 different layers using masking, each time other different pixels get mask and the others get 1 so the final result is 3 layers that are complemntary: My problem is that ...
0
votes
1answer
21 views

Coordinates transformation of four columns in qgis

I have four columns with grid coordinates X_min Y_min X_max Y_max. As these coordinates are in ESPG 3857, i want to convert each of the columns to 4326 in QGIS. Can anyone help?
2
votes
1answer
10 views

Can't get the coordinates from OpenLayers polygon drawing

I'm building an app using Ionic 4 included OpenLayers. After drawing the polygon, I can see the coordinates on the console.log but I don't have a solution to get these coordinates. Here is what I ...
2
votes
1answer
26 views

Sum of zonal statistics QGIS

I'm a bit lost with the zonal statistics tool in QGIS. I have a raster layer representing population densities per km2 for Asia. I've clipped the raster to my Vietnam provinces polygon as it is my ...
0
votes
0answers
21 views

Water Body area extraction or detection from Landsat data set using Google Earth Engine

I want to extract or detect water body of my selected region using the relationship between water and vegetation indices, and these water and vegetation indices were calculated by using the cloud and ...
0
votes
2answers
29 views

Auto colour change after changing polygon geometry using ArcGIS Pro

I am using ArcGIS Pro. Is it possible to change polygon colour after i change it's geometry? For example, if there were five vertices, the figure is green, and after i change it to be four vertices ...
0
votes
0answers
8 views

Unlinking single map/scene view in ArcGIS Pro

In ArcGIS Pro it is easy to link views: Your maps and scenes can be synchronized to work together via the use of view linking. This means that you can simultaneously use multiple maps to ...
1
vote
0answers
6 views

Google Earth Engine: Adding raster assets. How long can the ”Asset ingestion” take in Earth Engine after a successful upload?

I am trying to add a relatively large raster dataset (single band data, 8.05 GB GeoTiff, semi-global coverage) as an asset to Earth Engine through the web interface. The upload succeeded, but now ...
1
vote
0answers
22 views

Using CRS 3857 but misalignment between Stamen background and coordinates of polygons in GeoPandas

Using GeoPandas and Contextily to create maps with a Stamen background map I notice a misalignment between the background map and the coordinates of polygons drawn on the map. The shape file is from ...
0
votes
0answers
20 views

Alternatives to ArcGIS' “RegionGroup” a raster

I'm using the ArcGIS Python 2.7 interpreter in my PyCharm as I need several algorithms of the ArcPy package. However, I am having trouble with the RegionGroup of ArcGIS 10.7, as it sometimes crashes ...
0
votes
1answer
31 views

Getting elevation data or Z value of point using QGIS

I know that there is 3d drawing in QGIS. However, i want to learn that how it converts 2d map to 3d. Is there a way to get height value of points or does it convert longtitude,latitude to xyz format?...
0
votes
0answers
14 views

How to merge GPS track logs from multiple receivers [closed]

I have a set of GPS tracks from multiple receivers that were logging simultaneously. As you'd expect, there are times when one of the receivers has a good fix and another doesn't, or when there are ...
1
vote
2answers
28 views

Export raster to PNG in 1:1 scale from QGIS?

The raster I have is 1m LiDAR data that's been patched and properly color corrected. The resolution of it should already be 1m/pixel. The coordinate system is properly set, the measure tool measures ...

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