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3 views

QuickOSM using wild cards on lines (rivers)

I'm trying to find all rivers with a name containing specific word (or part of it). F. ex. all 'Danube-' rivers, or 'Danu-', 'Dan-' and so. In another topic I've found useful query, which after ...
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10 views

Eliminating end points automatically

thank you in advance for your reply, if any. In QGIS 3.10 i have a point file and i decided a colors palettes for it. Let's say this palette is composed by 11 colours steps, from blu to red and its ...
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5 views

how to predict the raster from the time series of NDRE using non-linear regression model in r?

Here I have posted the code and got the stacked image of NDRE index by using get_filenames function and then I stacked, there are 4 layers in the stacked image I want to come up with the predicted ...
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0answers
3 views

Seeding vector tiles using standalone GWC rest service

There is a problem with seeding/reseeding tiles in Mapbox vector tile format using GWC rest API. In order to do the job, I've used the following curl to create tiles of a sample extent. In comparison ...
2
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1answer
21 views

Calculating percent overlap between polygon shapefile and grid using QGIS

I want to calculate what percentage of each grid square is covered by part of a polygon shapefile in QGIS. So far I can get a column of whether a grid square touches the polygon or not (0 or 1), but I ...
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0answers
12 views

Automatically draw lines following another line feature class

I am trying to develop a method to draw lines following another polyline feature class. I have two layers. Polylines - Overland flow path Points - where the new lines start What I want is, find a ...
2
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1answer
18 views

Labeling by specific field using ArcPy in ArcGIS Pro

I have seen Specifying Resource Field For Labeling in ArcPy with ArcMap but it refers to ArcMap and arcpy.mapping whereas I am using arcpy.mp with ArcGIS Pro. I have a polygon feature class called &...
3
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0answers
16 views

Differences between different georeferencing transformations algorithms (QGIS)

Expanding on this question, I'm trying to understand the exact transformations used by QGIS - and how they differ. The georeferencer documentation is of course a good starting point, but I need more ...
-1
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1answer
12 views

Convert shapefile to integer array file

I have a shapefile similar to the one below. This shapefile shows zones in a specific model. The model cell size is 100 x 100 m. I want to convert it to integer array file with unique integer value ...
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0answers
10 views

Stop QGIS from auto-resizing canvas?

Can the automatic resizing of the "canvas" be disabled in QGIS 3.10? I have manually framed an area of interest, set and locked the scale, and set the magnification in order to be able to ...
1
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1answer
14 views

ArcMap convert mm to m

I have been given a DXF which is in mm instead of m. It also hasn't been spatially referenced. I'm not too concerned with it being referenced in the right spot as I can easily translate it in another ...
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0answers
8 views

Two y-axes Chart [Google Engine] [closed]

I have 2 lists (features) and I wanted to join in a graph, where the X axis would be the months and the Y axis would be the monthly data of TRMM and the other one of MODIS. https://code.earthengine....
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0answers
12 views

Specifying different margins on each side of map in a QGIS report

When generating a report with QGIS it is possible to define a margin around the selected atlas feature when drawing a map. Unfortunately it isn't possible to define different margins for top, bottom, ...
1
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1answer
21 views

TurfJS dissolve not working as expected

Why are these two overlapping polygons not dissolving? I would expect the smaller polygon to dissolve into the larger but instead two individual features remain. See fiddle for code example. http://...
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0answers
8 views

Getting Google Maps “Areas of interest” Polygons

Is there a way to obtain the polygons corresponding to the the yellow-shaded "areas of interest" / areas of commercial activity from Google Maps? Either through a Google API capturing the ...
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0answers
5 views

readLAS error in rLiDAR

Good day, I am having las file read error while using the rLiDAR package in R. The error is as follows: Error in readBin(con, "raw", size = 1, n = 4, endian = "little") : can ...
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1answer
16 views

Problem transforming coordination system of this shape

I would like to convert this shape-file to WGS84 / UTM Zone 33N. But I failed in qgis. What did I do wrong? Assigning the projection doesn't change it... https://daswirdmanjawohlnochsagenduerfen.de/...
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1answer
14 views

Looking for a SoilGrids archive

Is there an archive through which I can access older versions of SoilGrids? I'm specifically looking for one representative dataset for each year since 2015. Also, is SoilGrids updated on a regular ...
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0answers
6 views

Adding intersecting information from a point layer to a polygon layer pop-up window in ArcGIS Online using Arcade

I have two layers. One point layer and one polygon layer. The point layer has several points that fall within each polygon. The points represent different types of sports, and the polygons represent ...
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0answers
10 views

No response data from GeoServer when using EPSG::4326 projection

So I have a Zurich vector (.mbtile) data set I would like to render in a browser using GeoServer. I was able to use geocache to serve the data in the EPSG::900913 projection using the following ...
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0answers
8 views

Convert GeoTIFF to NITF

This should be very straightforward, but I can't seem to find this exact conversion scenario. I understand pixel / row / and lat and long coordinates but it seems like none of these values agree with ...
1
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1answer
8 views

Assign NTA's to lat longs using R?

I have lat longs and want R to return a column of the neighborhood tabulation area for each point; lat long NTA 40.79127 -73.96484 Morningside Heights 40.72622 -73....
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0answers
8 views

How to respond to marginal height error when using LiDAR DTMs in ArcGIS

I am comparing DTMs of a river valley over time using LiDAR data from the DEFRA download website. The Environment Agency state that this data has a relative height error of +/- 5cm. The problem that I ...
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0answers
17 views

Virtual Raster in QGIS not rendering Sentinel-2 spectral imagery correctly

After downloading Sentinel 2 imagery via the Semi-Automatic Classification Plugin, I collected Bands 4,3,2 into a Virtual Raster in order to render a true color image. By using the Stretch to MinMax ...
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1answer
10 views

Can't import existing .gpkg files to create a new Geopackage layer?

I'm a new QGIS user running 3.14.0 on a Mac with Mojave 10.14.6. While following along with this tutorial (https://www.youtube.com/watch?v=kCnNWyl9qSE), I reached around the 22 minute mark and ...
1
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0answers
27 views

Applying specific styling to GeoJSON layer in Leaflet.js

I am new to Leaflet.js and I would like to apply specific styling to the Geojson layer> This is my code so far: # geojson data var geojson = { "type": "FeatureCollection", &...
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0answers
23 views

Drawing points in real time (or at short intervals) using PyQGIS [closed]

I’m working on a robot that moves in space and transfers its GPS coordinates to the server. I need to create a script in QGIS that will receive coordinates and draw points based on these coordinates ...
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0answers
10 views

Exporting a CSV file from a Graphic in GEE

I would like to export a CSV file from a graphic and I don't know how to prepare the collection to be exported. This is the program: var AOI = geometry; // NDVI Image Collection var NDVICollection=...
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0answers
8 views

Sentinel-1 image backward

I have this problem with my images of the Ross Ice Shelf: This is an image that has been Radar - Radiometric- Calibrate- Amplitude_HH - Gamma0 followed by Speckle Filter. This is what happens when I ...
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0answers
17 views

qgis: how to change attribute form values using PyQGIS?

i am trying to edit layer properties - attributes form by using PyQGIS. How to change Autogenerate to Drag and Drop designer programatically?
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1answer
13 views

ArcGIS quantile classification method results in unequal data values in each class

I have a raster dataset which I visualized in ArcMap 10.6.1. I used the quantile data classification method to assign colours to the data values. ESRI's documentation says the following about ...
1
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0answers
28 views

Shapefile will not load in QGIS but does in ArcGIS

Using QGIS version 3.14.0-Pi on Windows 10. I'm trying to download a shapefile (Layer, Create Layer, New Shapefile layer). In the resulting dialog I use: File encoding UTF-8, Geometry type "...
3
votes
1answer
28 views

QGIS3.10 - Deleting duplicated and overlapping geometries based on attribute comparison

I'm having a bit of a headache on this one, I hope you'll be able to help me out. (I'm on QGIS 3.10) Problem Here is the case : the national Dutch zoning plan regulation is delivered with shapes in ...
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0answers
13 views

qgis3: how to edit project save paths using pyQGIS?

how to programmatically change save paths from absolute to relative?
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0answers
7 views

Geonode and Mapstore

Can we change the view of the map that comes from mapstore in geonode? change the place where we get present the data of the layers to be like a popup and not shown in the right side I have tried to ...
0
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0answers
8 views

How to Create Spatialite tables and layers in QGIS using Python

I'm trying to build a data model for use in QGIS. I want to use Spatialite (SL). I've found a few things on the internet to create an in memory layer. I don't know how to specify the SL database where ...
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0answers
6 views

Set Polyconic projection to new origin for N America?

I'm helping out with an artist driven map project that requires a modified polyconic projection of the world, centered on N America. The artist wants to render globe gores, like the image attached ...
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0answers
16 views

ArcGIS WebApp Builder - Links to related sites within map

I am creating a map application using the WebApp Builder in ArcGIS online. The underlying map was created in ArcMap. I know it is possible create a link to a webpage in the pop-up boxes, but is it ...
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0answers
18 views

Looking for a hard or soft copy of a report

More than 90% of the papers I read that are related to coastline changes lad to your search " Semi-automated construction of the Louisiana coastline digital land/water boundary using Landsat ...
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0answers
7 views

Calculate the mean over a image collection of one specific band in Google Earth Engine

I have an image collection with 12 entries. I would like to calculate the mean overall the 12 images and therefore access properties:Mean:NDWI as a number and add it to a list. How can i do that? I ...
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0answers
9 views

Numpy ndarray written to GeoTIFF is distorted when ndarray is not a square

I'm writing an image stored in an Numpy ndarray to a GeoTIFF file, knowing the extent of the image in degrees. As long as the ndarray shape is a square the image is created correctly, even when the ...
0
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0answers
8 views

Create point in the origin of a CRS using PROJ.4

I know we can use ST_TRANSFORM to transform a geometry into a different spatial reference system, which can be defined as a PROJ.4 string such as: +proj=gnom +ellps=WGS84 +lat_0=52 +lon_0=0 +no_defs. ...
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0answers
8 views

Are there Sentinel crop labeled datasets available?

I am starting a project where I am going to use Sentinel-2 imagery and machine learning for detecting sugarcane and coffee. In order to train the algorithm I would need labeled sentinel datasets. I've ...
0
votes
0answers
21 views

Setting Spyder to recognize .pyt extension when using ArcPy

I am trying to develop python toolboxes in ArcGIS Pro and am using Spyder as my IDE. I would like to open the .pyt file in Spyder and use python syntax highlighting, but cannot figure out how to ...
1
vote
1answer
28 views

Get all geom points that are more than 3 meters from the linestring, at big scale

With the help of Osmosis i was able to import all the data of a Open Street Map city, (Nodes, ways, etc...). In another table at same db, i have Millions locations in that city, these locations are ...
0
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0answers
16 views

Errors when uploading image to Earth Engine directly from the Cloud Storage bucket

I wanted to upload the image to Earth Engine directly from the Cloud Storage bucket with the earthengine command but encountering some errors !earthengine upload image --asset_id={OUTPUT_ASSET_ID} --...
1
vote
1answer
83 views

How to fix QGIS being extremely slow?

So I'm developing plugins and for some reason my QGIS keeps getting slower and slower. At first when I clicked on QGIS it opened right away, now it takes at least 2 minutes just to open and it also ...
0
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0answers
7 views

Do Sentinel-2 L1C data downloaded from USGS Earth Explorer consist of reflectance values or digital numbers?

I was wondering if Sentinel-2 L1C data downloaded from USGS Earth Explorer consist of reflectance values. And is it necessary to use reflectance values for time series analysis of Sentinel-2 ...
0
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0answers
13 views

Overcoming error : classified: Layer error: Image.reduceConnectedComponents: Label band must be integer valued, found type 'Float'

with following code , I am getting error message https://code.earthengine.google.com/15a22656f680c38ff0bf10afd2747c5f classified: Layer error: Image.reduceConnectedComponents: Label band must be ...
0
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0answers
19 views

Batch PyQGIS3 NDVI calculation yielding skewed outputs

in a previous post, I thought I'd cracked a problem running a script with a batch NDVI calculation: from qgis.analysis import QgsRasterCalculatorEntry, QgsRasterCalculator from qgis.core import ...

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