0
votes
1answer
6 views

“Hole” argument ignored in call to Polygon function

I am working with a dataset consisting of a list of coordinates for a set of polygons. Some of these polygons are holes. However, the dataset does not follow the convention of listing the coordinates ...
0
votes
0answers
2 views

Unable to export in any format with Print Composer (QGIS)

Well, as title states, I'm not being able to export in any format (nor image nor PDF). Just to try this function I added a map (with OpenLayer Plug in as background which loaded just fine in the Print ...
0
votes
1answer
8 views

To check if a geomtry is contained in a geomtery collection in postgis

How can I check if a geometry is contained in a geomtery collection ? Specifically , I am using ST_ClusterWithin in POSTGIS to get a cluster whicch returns each cluster as a geometry collection. Now I ...
1
vote
1answer
226 views

Where do I save the Options file for ArcGIS 10.1 to release hanging licenses

I have created an options file for ArcGIS 10.1 so that I will be able to release a hanging ArcGIS license after a set amount of inactivity. I found that for ArcGIS 10.0 the correct directory to store ...
0
votes
1answer
16 views

Can't render my own map canvas

My goal is to make a standalone application using the QGIS library, but for now I'm trying to make everything work in a Qgis plugin. I need to create a map canvas inside my plugin window. There is ...
3
votes
1answer
18 views

Plot a world heat map with mollweide projection in R

I have a data set with global observations with lat/lon information. There are 288 longitudes from -179.375 to 179.375 with spacing 1.25, 180 latitudes from -89.5 to 89.5 with spacing 1. There is one ...
0
votes
0answers
2 views

ArcGIS GeoEvent Processor WebSocket data output Error

I have installed ArcGIS for Server 10.4, and ArcGIS GeoEvent processor along with it. Both are working perfectly. I have also created a GeoEvent service following the tutorial provided by GeoEvent ...
0
votes
0answers
6 views

Qgis: set “draw line inside polygon” using Python

This is a Qgis question. In the properties of a layer I want to activate "draw line only inside polygon" for a specific layer, but using Python. I don't want to use the GUI for it. Can this be done? ...
0
votes
0answers
2 views

Displaying GeoServer WMS GetFeatureInfo in ArcGIS Pro?

I recently set-up a GeoServer WMS endpoint with GeoWebCache. I can get the WMS layer to display fine in ArcGis Pro 1.2. When I click on the map to get feature information then I can see the ...
2
votes
1answer
24 views

Selecting polygons not covered by any other polygon (or BBox) in table in PostGIS?

In a table where many of the geometries might be completely covered by other ones, is there a query that selects only geometries that are not covered by any other geometry in the same table (excluding ...
0
votes
0answers
23 views

Visualize Lat, Lon, Altitude

What software would be best for visualizing a series of latitude, longitude, and altitude coordinates? This is data for a series of satellite locations. I've looked into: MATLAB: the mapping toolbox ...
2
votes
1answer
17 views

postgis How can I obtain directional buffer?

I have a geometry (polygon) which I want to extend with a buffer while testing on it in a where clause. The problem is that I would like the buffer to be only applied according to one or more ...
6
votes
2answers
1k views

Display map scale (like 1:20.000) next to ScaleBar

In my PageLayoutControl I add a ScaleBar. Additionaly I like to show the map scale/ratio (e.g. "1:20.000") next to it, but didn't find a way to achieve this with the ScaleBar. Am I missing something ...
1
vote
2answers
172 views

HTML Dom elements as marker / feature in Openlayers?

I want to set HTML Dom element as marker in openlayers, instead of GIFs,PNGs. Is it possible to do so?
0
votes
0answers
14 views

Oracle Spatial layer (polyline) not always displaying in ArcMap? [on hold]

i'm using oracle spatial layers and connected them to ArcMap 10.1 as database connection as usual from catalog, oracle version 11g i can access attributes all from spatial table, i have problem only ...
0
votes
0answers
173 views

Web application using Dot Spatial not rendering shapefile?

I want to create Asp.Net web application which can do following things. Import Image file and render on Dot spatial's map control in web application. create dynamic shape file. I have created the ...
0
votes
1answer
20 views

Create map using Leaflet and JSON

I have a question in order to developing a web app using dynamic maps with JSON files. I'm using Visual Studio 2015 with MVC 5. At this moment i have developed complete app but I'm unable to draw ...
0
votes
1answer
18 views

QGIS 2.14.3 export PostGIS layer to dxf issue

I am trying to export a PostGIS layer to dxf in QGIS (2.14.3) via Project>DXF-Export using the following settings (German GUI): When I open the resulting dxf in DWG TrueView 2016 I see nothing, but ...
0
votes
1answer
175 views

Georeferencing in ArcGIS - Zero-Order (Shift)

Zero-Order (shift) transformation is meant for rasters that only require shift, which as i understand it means moving or translating the image. Two questions: Does it mean that two or more control ...
0
votes
0answers
6 views

QGIS On the fly reprojection issue

i'm hving an issue with QGIS 2.14.3 (Windows 10). I've two layers: PostGIS table (EPSG:23030) Shapefile (EPSG:25830) I setup on the fly transformation (23030) in QGIS, just for check, but both ...
1
vote
1answer
19 views

Convert 5-digit string number into a readable date in CartoDB

Based on a couple of assumptions here 1) I have about 6 clean formatted date columns imported from Excel that CartoDB converted into 5-digit strings. I cannot select 'date' in the column label. 2) ...
0
votes
2answers
3k views

How to create a grid of latitudes and longitudes to be displayed in polygon boundry with ArcMap?

I'm looking for some direction on how this can be achieved. I have with me a polygons of a country, state and city in geographic coordinate system. A grid of latitudes and longitudes is to be created ...
0
votes
1answer
26 views

specify the bounding box for gdal2tiles

I want to generate tiles for an PNG file. In the MapTiler(GUI wrapper of gdal2tile), I can specify the bounding box and the zoom level, then it does the good job, which generates the tiles only for ...
20
votes
2answers
7k views

Dividing polygon into specific sizes using ArcGIS?

I have several thousand irregularly shaped polygons in a shapefile. I want to be able to split each polygon into three areas, and to specify what the size of those areas (they sum to the previous ...
0
votes
0answers
17 views

Finding tool to divide polygon into specific areas in ArcGIS?

I am using ArcGIS 10.3.1 and am trying to divide a polygon into several smaller polygons based on a percentage. I have found a theoretical answer How to divide a polygon into specific sizes using ...
0
votes
0answers
12 views

Publicly accessible (near) real-time satellite imagery

The operators of the Himawari-8 weather satellite provide a fresh full-disc picture of Earth every 10 minutes. This is a great resource and powers applications such as RealEarth. Are there any other ...
0
votes
1answer
34 views

Attaching toolbar in QGIS?

I have a similar problem to Getting back to side bar after detaching layer panel?, but with toolbars. So I accidentally detached digitizing toolbar (and other toolbar as well), and cannot put it ...
3
votes
1answer
558 views

Getting back to side bar after detaching layer panel in QGIS?

I accidentally clicked on the detach icon on the layer side panel of QGIS and now it floats and I cannot get it back to the side bar where I want it.
1
vote
0answers
8 views

Meaning of visitor stats in CartoDB?

CartoDB helpfully shows a daily hit count for each map, but I can't find out how end of day is defined. I seem to get lots of hits "overnight" in UTC, and I swear the hit count for two days ago just ...
0
votes
0answers
10 views

Land surface temperature of LandSat 8?

I want to find land surface temperature of landsat 8 data i used the image of month feb and i got two values high and low but the low value was in minus i performed again and again and facing the same ...
0
votes
1answer
16 views

Analysis tools UPDATE not available

Why UPDATE from Analysis tools in ArcGIS 10.3.1 is not available to me, does it need some specific license or can it be download separately? How is it possible to achieve exactly the same result as ...
0
votes
1answer
200 views

Open Layers 3 with Feature Grid

I cannot find examples of OL3 integration with EXT, such as done with GeoExt. It looks like GeoExt is waiting for funding to do this. What I want is a feature grid with vector data displayed in a ...
1
vote
0answers
17 views

Zonal Statistics ArcMap 10.4

I have a problem using Zonal statistics in python using ArcMap 10.4. This is a completely random error, and I have no idea what to do. Some back ground is that I have been running a script doing ...
0
votes
0answers
16 views

Raster to vector data generation problem

I am trying to generate lee multiplier zone (see map please) from raster data using georeferencing and digitization. See this map only contains THREE layers! Lee Multiplier Coastal boundary Cities ...
0
votes
0answers
11 views

How to optimize QgsFeatureRequest with filter expression

I have a point Postgis layer (my_layer) which has more than 66000 features. I am getting the features I want but it takes too long. My code is: resultList = [] req = ...
0
votes
0answers
20 views

How to automatically filter data from a table in the composer QGIS 2.14.2?

I have configured in the print composer 3 attribute tables with a filter to display values of a map. Currently the filter only shows the data area 27 and if I center the map to display another area ...
3
votes
1answer
639 views

OpenLayers and custom Proj4 Projection

I am trying to map some planetary data on my webMap server using OpenLayers. I defined a proj4 projection as follow: Proj4js.defs["MYDATUM"] = "+proj=longlat +a=1740000 +b=1740000 +units=m +no_defs"; ...
1
vote
0answers
21 views

How to generate surfaces of different heights from LIDAR points

I am seeking a way to generate surfaces of different heights from LIDAR point clouds.The typical application is like roofs, which may include holes, due to different heights. However, most tools, ...
1
vote
0answers
818 views

qgis-bin.exe - System Error

I'm running QGIS 2.8 Wien on Windows 8.1. I got this error: The program can't start because qgis_core.dll is missing from your computer. Try reinstalling the program to fix this problem. I ...
0
votes
1answer
78 views

ERROR 000358: Invalid expression Failed to execute (SelectLayerByAttribute)

My python script in ArcMap has an initial dialog box with two inputs: REG_CODE (values are in a list and include 'AKR', 'IMR', 'NER', etc) and Selection_type which offers 'NEW_SELECTION', ...
11
votes
2answers
4k views

Efficiently selecting related records using ArcPy?

Below is the code I'm using to replicate the "related tables" button in ArcMap. In ArcMap that button selects features in one feature class or table based on the selection of features in another ...
1
vote
0answers
12 views

Create a correlation between different point dataset

I have different point data-sets in my map in ArcMap, but I am wondering if there is an tool in ArcMap that can analyze the correlation between the different data-sets. Specifically, I need to know ...
0
votes
1answer
8 views

where are GRID saga algorithms in saga 2.1.4?

I am a real newbie on QGIS and willing to draw contour maps from satellite, following the youtube videos. so now I have a table with all data, and following the video, I should use the SAGA tool GRID ...
10
votes
2answers
1k views

Why does one part of GML -> KML conversion not work on Google Maps?

Brand new to all of this, not even sure this is the right forum to ask in... I have a client who wants to visualise cancer incidence and mortality rates by local/unitary authority across Great ...
2
votes
1answer
44 views

Merging raster files produces error in QGIS?

I'm trying to merge (Raster -> Miscellanous -> Merge) four raster files into one. Each file has same CRS and are saved as .tif files. Merge produces error: "The process crashed some time after ...
0
votes
1answer
17 views

FindTask does not work - 304 not modified

I use 3.16 and I have got some problem. When I try to execute FindTask require(["esri/tasks/FindTask", "esri/tasks/FindParameters"], function (FindTask, FindParameters) { ...
0
votes
0answers
5 views

ArcGIS for Server Token expiring at midnight regardless of validity length? [on hold]

I have PRTG set up to monitor my ArcGIS 10.3.1 for Server services. In PRTG I have to define my server and set a sensors which are then checked periodically. I my case, for every AGS Service I test ...
4
votes
1answer
37 views

Extracting cell size of Raster as value for buffering using ModelBuilder?

I am creating a model in ArcGIS ModelBuilder to buffer a line. I would like the buffer distance to be based on the cell size of a raster. The cell size may change depending upon which raster the user ...
1
vote
3answers
94 views

Replace occasional Space with Underscore using Python parser of ArcGIS Field Calculator?

I am creating a model which will give me two string values, one which reads exactly what is in a field and another which automatically replaces any Space with an "_". I have used Calculate Value tool, ...
0
votes
0answers
11 views

PYQGIS Layer to KML?

I am aware that it is possible, in QGIS, to save your Vector Layer as a KML file manually, however, I want to know if there is anyway I can do this programmatically from an external Python Script that ...

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