1
vote
1answer
38 views

Dissolve doesn't work with empty layers

I have this model: The tool dissolve has this precondition of the Calculate Tool in order not to run with empty layers: However, when it runs with a empty layer it returns the following error: ...
0
votes
0answers
3 views

GMT: Plot subset of polygons based on categorical metadata field

I'm new to GMT and trying to perform what seems like a simple task. I have a GMT (ASCII) XY file containing a geologic map---polygons with lots of metadata fields. I'd like to use gmtconvert to select ...
2
votes
1answer
24 views

How to set the style of a layer, in OpenLayers 3, without auto refreshing the layer?

I want to set the style on run time, but I don't want the layer to auto refresh. I want to be able to perform some changes before I manually refresh the layer. I looked into the setStyle method and ...
2
votes
4answers
73 views

Downloading Scotland's national power grid from OpenStreetMap

I've been tasked with finding a complete dataset of Scotland's electricity grid network. This comprises a series of cables carrying 132 to 400 kV. I'm assuming that many of these cables are above ...
2
votes
0answers
24 views

Dynamically load symbols preview to plugin

I am working on plugin which combines two *.qml files into new one. Now I'm trying to generate something like "list" in plugin interface. What I have done so far is saving repeated in both files keys ...
0
votes
1answer
13 views

Can not find “application/json;type=geojson” in Geoserver Tile cache format

I want to server TMS service using geoserver. I know it can be done using GeoWebCache which is loaded by default on geoserver, I have downloaded last version of geoserver and installed it,there must ...
0
votes
0answers
14 views

PostGIS: Cannot create a multiband raster table from other single band raster table

I succesfully uploaded Landsat 7 imageries using raster2pgsql. As each band is in a single geotiff, I have hence the same number of tables in PostGIS. I would like to merge all these tables into a ...
2
votes
3answers
102 views

Prevent export to shapefile from postgis table in QGIS

I have created a centralized database using postgreSQL and created multiple users assigned with different roles i.e. SELECT, UPDATE, MODIFY and DELETE etc. Example: CREATE USER hasan WITH ...
1
vote
0answers
7 views

import error of qgis.core even though PYTHONPATH set up with system environment variable

I made the environment variables as described here: How2 Import Though I still receive this error: C:\>python Python 2.7.5 (default, May 15 2013, 22:44:16) [MSC v.1500 64 bit (AMD64)] on win32 ...
0
votes
0answers
12 views

Importing .RAW file data from Sanding total station into ArcGIS for Desktop?

I am using a Sanding total station (Chinese version of Leica), and for some reason it only allows me to download .RAW files as jobs, which I can't open at all. The CD, which came with the station, has ...
0
votes
1answer
19 views

Making 3d block from flat 2d polygon in ArcScene?

I would like to make a mountain from flat polygon (this polygon is the base contour of the mountain). The question is how to make it keeping 35 angle of the slope ? The top of the mountain should be ...
-1
votes
0answers
8 views

Routing in R using Leaflet

library(rCharts) library(shiny) runApp(list( ui = pageWithSidebar( headerPanel("Title"), sidebarPanel("MyApp" ), mainPanel( tabsetPanel( tabPanel("Interactive Map", ...
0
votes
1answer
20 views

Moving from one Latitude and Longitude, to another point? [on hold]

I don't really have a good understanding of GPS other than I know what Latitude is and what Longitude is, but I don't know how exactly to move between the 2 points. First point is Lat: 56.53515 and ...
0
votes
0answers
7 views

How to tilt/change angle of view/camera from ortho in Mapserver or Openlayer?

I am wondering if there is a way of changing the angle of the camera in Mapserver from Ortho to a 60degree(+-10) angle. Perhaps this is an extensive modulation of Google Maps? I could imagine that ...
0
votes
0answers
27 views

How to transfer x, y, and z values from LAS/LiDAR file to GeoTiff using Python?

I have LAS files containing x, y, and z coordinates from LiDAR point cloud data, and with python I can get one single attribute (elevation, or z points) to transfer to a GeoTiff via interpolation and ...
0
votes
2answers
37 views

Converting multiple csv automatically to shp using ArcPy?

I have more than 300 csv files. Every csv file contained different Longitude, Latitude and other parameters (e.g. Date, Longitude, Latitude, Elevation, Max Temperature, Min Temperature, Precipitation, ...
1
vote
1answer
13 views

Select and modify attributes in FME?

I am new to FME but used to ArcGIS ModelBuilder. I am trying to figure out how to select rows based on an attribute and then change the values in the selected rows by a simple formula in FME. The ...
3
votes
1answer
29 views

Creating contiguous dispersal surface between two climate-change scenarios in ArcGIS for Desktop?

I'm modelling the distributions of Australian parrots in response to climate change. I have two climate scenarios (present and future), and have used Maximum Entropy modelling to generate maps of ...
0
votes
1answer
12 views

NMEA sentences-PADCH,PAGCD

I was looking on was NMEA sentences. From which I got a series of know how doubts. I got to know about the terms like $GPGGA, GPHDT, GPGSV, GPGLL from GPS data. Also I could see many new terms like ...
3
votes
1answer
34 views

Error using Grass v.clean

I am trying to clean topology of a TAB file in QGIS 2.14.4 and it returns an error message as below The weird thing is, I am able to execute this okay on my machine but not my colleague's. The other ...
-2
votes
0answers
17 views

QGIS crashes when a WMS/WMTS layer times out

How can I get QGIS to not completely crash when one WMS/WMTS layer is having problems communicating with the service. If the network is having difficulty, fine. This should not crash the entire ...
0
votes
1answer
20 views

Enterprise Geodatabase Replication for Offline Use

I need to have a consistently updated geodatabase that will go offline in Collector. I am open to new ways to do this. What I have been working on is below. Our environment: SQL Server 2012, ArcGIS ...
0
votes
1answer
13 views

How to auto rotate labels for Polygons in Mapserver?

I want to auto rotate labels of polygons in .map file, all options that exist in Mapserver refers to linear feature only and not polygon. is there any algorithm I can implement in .map file to auto ...
0
votes
0answers
21 views

Camera Parameters for Planet Labs Satellites

I am trying to run some computer vision algorithms on Planet scenes. Probably one of the most important collections of information for computer vision is having the camera parameters (intrinsic matrix)...
0
votes
0answers
15 views

whats a good replacement for microsoft streets and trips [on hold]

I am looking for a simple mapping editor tool with these criteria: Uses a background of common tiled raster maps - google,bing,osm Need ability to do free hand drawing or add shapes (circle, box, ...
2
votes
1answer
23 views

Seeking documentation for qgis.utils module?

There is a PyQGIS module called utils that I can't find any documentation for. It seems to have some useful functions for loaded plugins. Within the Python console in QGIS you can run qgis.utils....
1
vote
1answer
16 views

Display X-Y data with different colors

I have a list of lat/lon coordinates for data points that I want to put on a map. I want to have the size and/or color of the points to change based on additional columns on the excel sheet with the ...
0
votes
0answers
12 views

Histogram using categorical variable? [on hold]

I have a map where I assign a risk value of and also a label of high, medium, or low to each zip code on a map. I want to include a histogram next to the map of the distribution between the 3 ...
0
votes
0answers
15 views

Joining to non-spatial SQL database table using ArcGIS API for REST? [on hold]

A client has a REST service which hosts spatial data, and we are hitting their endpoints to generate maps. However, we are also hosting non-spatial data ourselves, and would like it to be viewed in ...
2
votes
2answers
39 views

Add complex north arrow to ArcMap?

How do you add this type of north arrow to ArcMap?
0
votes
0answers
21 views

Focussing on form created by add-in button and disabling any other buttons or tools in ArcMap? [on hold]

I made an add-in button and make it to show a form when it's clicked. I want the form to be focused. It means when I click anywhere outside the form, it will auto focus on the form and make any other ...
0
votes
0answers
10 views

Is there a digitizing standard put in terms of distance between points or Minimum Mappable Area?

I'm trying to find out what it means when a data set is said to be "digitized from 1:24,000 or 1:250,000, ...", etc. For example, the Natural Earth GIS data set is well-done, but I've never found ...
0
votes
0answers
18 views

Using text file to store tool parameters for ArcPy tools that have many arguments? [on hold]

How would I pull in script parameters from a text file to use in a script running as a scheduled task? I need to create a connection file, and cannot store the credentials in the same place the script ...
0
votes
1answer
27 views

Visualising DEM with threejs plugin?

I have DEM file for a small mountain created from TIN interpolation of points. The DEM looks correct on the flat QGIS working area. The moment I try to visualize a 3D of the DEM using threejs, I get ...
3
votes
2answers
25 views

GDAL grid produces NoData

I have a series of text files that represent X,Y,Z elevation data. I'm trying to use the GDAL grid command line tool to convert these text files to raster GeoTIFs. My files are space delimited and so ...
1
vote
0answers
16 views

Errors executing certain algorithms in QGIS Processing Toolbox?

When I execute certain algorithms in Proccesing Toolbox, for example "Convert polygon/line vertices to points" I get the following error: Algorithm Convert polygon/line vertices to points starting....
0
votes
0answers
15 views

Using Stamen toner-lines tiles as ArcMap base map?

Is it possible to use stamen toner-lines tiles as a base map in ArcMap? If so, how are they added as a base map? Several Stamen maps are available through ArcGIS Online, though not the toner-lines ...
2
votes
1answer
31 views

PyQGIS refresh layer tree programmatically

When programmatically applying a subset string to a vector layer (here: ax_flurstueck with object count 34265) via l = iface.activeLayer() l.setSubsetString('gemarkungsnummer in ('2760','2765','...
1
vote
2answers
29 views

Find true projection of feature class?

I have a feature class that has been processed and says that the projection is in WGS 1984 Web Mercator Auxiliary Sphere. However, I suspect that it is NOT truly in WGS 1984 Web Mercator Auxiliary ...
0
votes
2answers
19 views

Errors when publishing map services in ArcMap 10.3

I am using the python script provided by arc help to publish map services but keep getting this error. I am using desktop ver 10.3 and publishing to arc server 10.1. Different version isn't a problem. ...
0
votes
1answer
37 views

Can i set a specific transformation, for my Feature Dataset?

Using ArcMap, i created a 'Feature Dataset (FD)' and set it to WGS84, F23s. If i export a shapefile in SAD69 F23s, to this FD, it automatically project the shapefile to WGS, using the "...
0
votes
1answer
13 views

Density Slicing of MODIS Raster

I have some MODIS data processed with MRT tools. They are now in tiff format. Now, I have to complete Density slicing to identify water pixels from the image. The DN higher than 1985 is usually non-...
1
vote
1answer
16 views

Geoserver not recognizing jsonb attribute in SQL view of PostGIS db

I have an instance of Geoserver 2.8.2 running and a PostGIS database. I am attempting to create a FeatureType based on an SQL view of the following table (viewed through psql \d): ...
0
votes
1answer
19 views

Qgis2threejs error after changes in qgis-ltr-bin

I have installed QGIS 2.8.9 in C:\OSGeo4W folder and change qgis-ltr-bin.bat last line with start "QGIS" /B "%OSGEO4W_ROOT%"\bin\surveykshak.exe --configpath "%OSGEO4W_ROOT%"\qgisini%*. I changed ...
0
votes
1answer
3 views

How to view what properties exist in a GeoJSON file loaded into MapShaper?

Suppose I have a large GeoJSON file loaded into Mapshaper. I want to convert a property to use as an ID field on export, but I don't know what the property naming schema is. The file is too large to ...
0
votes
0answers
35 views

Opening ESRI Personal Geodatabase (*.mdb) in Ubuntu QGIS? [on hold]

This question has multiple components. (1) The immediate problem: Cannot load the data from a file called landuse.mdb into QGIS. Ubuntu version: 14.04 LTS, 64-bit. Mostly vanilla install. QGIS ...
1
vote
1answer
26 views

Distance from point stored in geometry with SRID 4326

I have stored 2.5 million data points (addresses) using the geometry data type in column latlong with SRID 4326. The latlon - column has a GIST index defined. I would select all addresses within a ...
2
votes
2answers
103 views

Python script for filling <Null> values with previous value in one field

I have a table (inside a File Geodatabase) that looks like this: I need the values of Owner attribute to be automatically filled with the previous non-Null value. As Such: Is there a Python ...
1
vote
0answers
25 views

Find all projects that source dataset?

Is there an easy way to see all the MXDs that use data from a single file geodatabase (GDB) as their source using ArcCatalog? I'm not arcpy proficient. I feel like I've used a tool like this before, ...
0
votes
1answer
17 views

How to calculate next point given two gps coordinates and speed? [on hold]

If an entity is traveling in a straight line and at a known speed of 1km/min, how can I calculate the next point at time t given two gps locations? The altitude does not matter. The gps format is in ...

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