All Questions

0
votes
0answers
18 views

Selecting layer by attribute in Python Toolbox of ArcPy?

I have this code where te input parameters are a shapefile [param0] and a string list [param1]. The second parameter is a list because I want that user select it. class Tool(object): def __init__(...
0
votes
0answers
14 views

Adding Buffer Wizard function in ModelBuilder?

I am trying to clip a series of raster grids to include into a mosaic. Presently I have made a model that initially reclassifies a grid into one class and then converts raster to polygon to get a ...
0
votes
0answers
10 views

Using spline / IDW interpolation for bathymetric profile of lake bed in ArcGIS Desktop?

I have partial bathymetric / topographic coverage at 1m resolution of a lake bed and shore and am trying to find an appropriate method for 'filling in the gaps'. I have tried using the following in ...
1
vote
0answers
20 views

Resizing QGIS custom form

I have followed this tutorial to create custom forms in QGIS (I work with version 2.18). However, I seem to be unable to control the shape and size of the form window. Thus, widgets are frequently out ...
0
votes
0answers
23 views

Example for request GetCapabilities to get bounding box of WMS layer [duplicate]

Please share an example in which a getcapabilities request is fired on the geoserver for bbox of a specific layer? Note:- I have seen answers in which method is given but no example of a request is ...
1
vote
1answer
27 views

Converting MSSQL linked MapInfo Tab file to a shapefile using ogr2ogr

I have some tab files that are actually references to a view in a MS SQL Server table. It looks like begin_metadata "\IsReadOnly" = "FALSE" "\MapInfo" = "" "\MapInfo\TableID" = "055372be-523f-430a-...
0
votes
0answers
13 views

In QGIS3 graphical modeler can I access a mssql based view as an input?

Is it possible to set the input file of "Extract by Attribute" to an mssql based table view? In the drop down to choose the input DB I don't see the loaded db view and don't see a way to connect one ...
2
votes
0answers
43 views

Sum of values grouped by owner [duplicate]

When I try to use the following expression, the preview shows me the correct sum, but when I click ok I get this notification. This tells me it can't calculate column "Subsidie J" It seems that it ...
1
vote
0answers
42 views

asyncio with multiprocessing

I am trying to run a multiprocessing on a zonal statistic in pure Python. I am new on it. I have to apply a zonal statistic with a shapefile with more than 6 million features on a taster of 6 GBs (...
2
votes
1answer
72 views

Labels with leaders in QGIS

I used the following link to create labels with leaders, but since I have a polyline layer I used a different expression for the Geometry Generator: make_line( centroid($geometry), make_point("...
1
vote
1answer
23 views

Upload many layers from PostGIS database to GeoServer using curl

I have more than 200 layers in my PostGIS database and I want to publish those layers in GeoServer using curl. I've imported one layer using the command below but can't figure out how to upload all ...
0
votes
0answers
22 views

Filling NoData around bridges in DEM

Is it possible to fill no data around bridges without pixels blurriness (see picture). I use Elevation Void fill function, also tried in qgis No data filling and Grassgis r.fillnulls. I know, that I ...
0
votes
0answers
25 views

Adding z coordinates to geometry of linestring GeoJSON file [on hold]

I have calculated elevations of each point in that GeoJSON file, but I don't know how to bind/insert these elevations values as [long,lat,height]. I have extracted each point of lines in a shapefile -...
0
votes
0answers
8 views

ArcGIS Online credentials not recognized in Android app [on hold]

I have a Web app where I display WebMaps or WebScenes using the ArcGIS API for JS (version 4.10). It is working fine in desktop with maps or scenes shared both publicly or privately (where I need to ...
0
votes
0answers
16 views

Using different versions of ArcGIS Server simultaneously [on hold]

I have only one license of ArcGIS Server/Enterprise but I noticed that for ArcGIS Server versions there are different licenses. So I have one for version 10.1-10.4 (currently in use) and one for each ...
3
votes
1answer
42 views

Root Mean Square Error of 2 raster layer in QGIS

Is there a method to calculate the RMSE between 2 raster layers in QGIS? I have 2 point cloud files, 1 edited and the other not. After triangulation of each layer I have obtained 2 raster files. I ...
0
votes
0answers
16 views

Importing XML to specific version of ArcSDE?

I am working in a distributed environment. I've got the data update for a specific version of enterprise geodatabase. Is there any way to import that XML in specific version? We have a province ...
0
votes
0answers
26 views

Using Mapbox tippecanoe's mbtiles in Geoserver

I've created a mbtile file from a geojson layer using tippecanoe command tool. The qustion is that is it possible to publish this mbtile in Geoserver with mbtile extension? I've used the extension to ...
0
votes
1answer
27 views

Plotting data only inside polygon in MATLAB?

We can plot data with polygon in MATLAB as a data size of 651*1200*12 S.X and S.Y shows the X and Y values of polygon. for i = 1:12 subplot(4,3,i) pcolor(lon1,lat1,data(:,:,i)) ; shading interp ; ...
0
votes
0answers
14 views

Change Lat/Long Geo Coordinate to Meter WPF

My project require me to find the coordinate of the target point using Traverse method. I can't find any example that allow me to get the target coordinate by using geo coordinate lat long on my map(...
1
vote
1answer
36 views

Qfield and Qfield sync plugin

Good day everyone, Does anyone have a link to a tutorial for using Qfield / Qfield sync plugin? My project folder is 25Gb and there is no way to add this onto the tablet.. I only need certain layers (...
0
votes
1answer
31 views

Move QGIS3 bookmark panel to be in the menu bar without creating a plugin

Is it possible to move the Bookmarks from a panel to be in the top menu bar - so you would get ...Edit--View--Bookmarks--Layer... and clicking on Bookmarks have a dropdown that has Sydney, Melbourne ...
2
votes
1answer
40 views

What datums were used in North America before NAD27?

What datums were used in North America before NAD27? I googled around on this without luck. Also I found an old nautical chart of Lake Michigan, dated 1876, which states: Longitudes on this map ...
0
votes
1answer
54 views

How can I enter negative value in QGIS connected to PostGIS [on hold]

I have small PostGIS table and I have integer in it when I use negative sign on the integer value I can't enter the data in QGIS it doesn't ago further down than 0 am I doing something wrong or do I ...
2
votes
2answers
36 views

Selecting features of a shapefile using attributes of another shapefile

A newbie here trying to learn QGIS for work. How can I select specific features of a polyline with the same values as the attributes of the buffer polygons I generated? I have a layer of polylines ...
0
votes
0answers
16 views

Geocoding spaces issue

I have a dataset that I would like to geocode using an API, but I am anticipating some difficulties. It would be helpful to know: is it even possible to geocode this? if yes, what API(s) would be the ...
0
votes
0answers
17 views

tmap::tm_facets() in interactive mode in html R Markdown file, small multiples variable title renders in wrong place

If you look at this reproducible snippet, when knitting, the first small multiples set renders both its and the next small multiples' title variable in the first set of maps. Here's the reproducible ...
0
votes
0answers
14 views

Multiplying individual raster layers by corresponding values in Excel file?

I have two groups of items I want to multiply, using the Times tool. I have a geodatabase full of density raster layers. I also have an excel sheet. This excel sheet has a column listing the names ...
0
votes
0answers
16 views

Issue with QGIS 3.4.4 Atlas legend not showing all map items

I have a layer within my project that has been filtered to show the associated point with the associated Atlas feature: But when in composer view and there are both point types within an Atlas ...
0
votes
1answer
36 views

Converting 32-bit image to 8-bit in ArcGIS Desktop? [on hold]

I was working on a DEM image which is a 32-bit image. However, I need to convert it to 8-bit image using ArcGIS Desktop. After the process I noticed the pixel values had changed. Can I now retain or ...
-4
votes
2answers
44 views

Leaflet-JS Not sure what is wrong with my script below

I have posted a screenshot of my index.html and JavaScript file. The problem is that It doesn't display any webmap. the only thing I can see is the head(h1 from my html. Any thoughts on this?
2
votes
0answers
25 views

Maintain raster color rendering across arcgis and qgis

I have a 16-bit satellite geotif. These images can be visualised in a number of ways, depending on which stretch you apply. The default stretch applied by ArcGIS to these images produces a "natural" ...
-1
votes
0answers
14 views

issues import fiona [on hold]

import fiona Traceback (most recent call last): File "", line 1, in import fiona File "C:\Python27\lib\site-packages\fiona__init__.py", line 87, in from fiona.collection import ...
1
vote
0answers
17 views

QgsFeatureRequest() with a string search within QGIS3 Processing Script [on hold]

I'm trying to select features using a string comparison within my script using a QgsFeatureRequest() and getFeatures() roadsRequest = QgsFeatureRequest() roadsExpression = str(roadsIDField[0]) + ' ...
1
vote
1answer
34 views

Counting number of pixels with negative NDVI value within polygon using Google Earth Engine?

I have made a map of vegetation loss and gain for a polygon in Google Earth Engine using NDVI and would like to calculate the area where loss occurred. I attempted to use the reducer to get the sum of ...
1
vote
0answers
23 views

Creating decision rules on pixel level in time series layer in R? [on hold]

I am using Landsat 5, 7, 8 images and RStudio. My goal is to compute the disturbance in a given area using the Vegetation Change Tracker (VCT) algorithm. I would like to ask you if you could provide ...
-1
votes
1answer
23 views

How to modify shapes created under “Edit” of main menu [on hold]

In my QGIS 3.4.4 main menu (not in a layout) I noted, under "Edit", an "Add Rectangle" option. So I tried it, and succeeded in creating a rectangle. However, I cannot for the life of me figure out any ...
0
votes
0answers
15 views

Filtering the atribute table on the atlas page so it only shows atributes of objects related to the featured object

I have been trying to make an atlas of cadasters, using different themes and rule-based symbolology, but one thing doesn't seem to work. On each atlas-page I want to put a table showing the ...
1
vote
2answers
40 views

Opening multiple attribute tables using .showAttributeTables()

I've got a question about .showAttributeTables() - i'm trying to open two attrbute tables at the end of a query (selection of lines within a polygon layer) - I thought I could simply do somthing like ...
0
votes
1answer
20 views

Retaining bands when pansharpening

I am currently pan-sharpening 8-band multispectral raster satellite images with single band panochromatic images. I use Arcmap pansharpen raster function to achieve this. The pansharpened result ...
1
vote
0answers
21 views

ArcGIS Addin disables itself

I have some custom ArcMap addins that I have built over the last couple of years. In one specific client environment, the addin installs correctly but when the user clicks the tool to execute it, the ...
2
votes
1answer
22 views

pgRouting assign source and target value to streets based on available nodes

I am a beginner in pgrouting. I have two tables in my postgres database. A street table, where each segment (see red line) carries an Id (ogc_fid). Additionally I have a nodes table (see brown points ...
2
votes
1answer
26 views

Creating a rectangle using leaflet / turf.js

I have written some code which creates a rectangle at the position of the user's cursor. There does not seem to be any method to do this in turf.js itself. And of course using the latlong-based ...
1
vote
1answer
49 views

Make a Loop for Monthly NDVI in Google Earth Engine?

I've computed maximum NDVI for each month. but I don't know how can I write this code through a loop in Google Earth Engine? code link: https://code.earthengine.google.com/...
0
votes
0answers
13 views

Tile caching not working

In my GeoServer I want to cache tiles for a layer. But when I am trying to seed tiles for a layer I can see the status as stated the image below. Tiles completed is -1. I am refreshing but it ...
1
vote
0answers
8 views

pyQgis snap-symbol doesn’t show

I have a script that prints coordinates on mouse klick including snapped coordinates if snap is active. The strange thing is that there’s no symbolism on the canvas that shows that you are snapping on ...
1
vote
1answer
39 views

Changing anchor point for popup without marker using Leaflet?

Is it possible to change the position of the anchor point for the popup without using markers? I was testing with this example. This code shows a popup, but I want to adjust the position of the ...
0
votes
2answers
39 views

Displaying rainbow colors for multiple polygon layers in ArcMap?

I am working with ArcMap and I have a series (20) layers - polygon lines in a group. I would like to ask you a way to color (not manually) all the lines with a rainbow color palette. The lines are map ...
0
votes
1answer
62 views

Database support in GE Smallworld?

What database engine can be used for GE Smallworld? I have poor information but I read about Smallword proprietary VMDS. Is it possible to use Oracle or SQL Server?
2
votes
1answer
22 views

Accurately tracking location in outback? [on hold]

I am looking for a way to efficiently track my whereabouts/tracks whilst traveling through the Australian bushland. In the past, I've just recorded my longitudes and latitudes from a basic GPS onto a ...

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