0
votes
0answers
4 views

Get nearest polygons in both sides of a polyline with arcpy

I have polyline shapes representing roads and another shape layer with polygons that are representing buildings. I have to find some way with ArcPy to measure the distance from a point within the ...
0
votes
0answers
9 views

How to convert a compound geometry (Oracle) to a geometry made of straight line segments only?

I have an Oracle Spatial table containing compound geometries (i.e. geometries containing both straight lines segments and arcs) that I want to project in another reference system. Using ...
0
votes
0answers
28 views

How do companies like DMTI Spatial create/generate the LDU polygon boundaries of Canada? [on hold]

Back Ground on issue: http://www.opennorth.ca/2013/03/05/open-postal-code-data-now.html Related Question: Where can I find Canadian postal code geometries? Canada Postal Unit: LOR 1B7 Canada has ...
4
votes
1answer
459 views

How do I link OGR with spatialite?

Problem & Evidence: I'm trying to create a spatialite file with the code snippet below. However the outDataSource object gets assigned NoneType and all subsequent (unshown) code fails. I'm ...
0
votes
0answers
3 views

OpenLayers 3 - layer Vector text write twice

I have a problem with a vector layer. Some labels are displayed more than one time. Here is my code: getText = function(feature) { var text; if (v == "v1") { text = ...
-1
votes
0answers
27 views

Confusion over Describe properties? [on hold]

Can someone clarify the meaning of the 'fullPropsRetrieved'and 'metadataRetrieved' properties of a Describe object within ArcPy. In particular my confusion is regarding the definitions provided on the ...
0
votes
0answers
3 views

Menu layer in leaflet [on hold]

I want friendly easy to use layer menu with icons like in here GIS Map
0
votes
0answers
3 views

Are my reflectance values of bands in range and what does DRA in GIS 10.1 do to bands?

I have done the TOA correction to red and near infrared bands using raster calulator then after i calculated NDVI from lansat 8 image. but the NDVI range came as : upper range=184 and lower ...
3
votes
1answer
35 views

Bold and Italic layer labels with Python in Qgis

I'm trying to apply some labeling properties to a layer using Python. Everything went fine, except the way I tried to apply the Bold and Italic settings. Here is a part of the code: ...
0
votes
0answers
6 views

How to remove attribution in Leaflet

I want to remove the leaflet.com that appears on the right bottom of the screen here
2
votes
1answer
29 views

QGIS 2.14 Composer incorrectly renders svg text position

I just noticed that SVG rendering in composer since upgrade to QGIS 2.14 is incorrectly handling some text placement. I have an SVG compass rose, which was rendering fine before upgrading to 2.14 ...
0
votes
0answers
9k views

GPS vs NAVIC (The Indian Regional Navigation Satellite System) [on hold]

What's the key difference between NAVIC The Indian Regional Navigation Satellite System (IRNSS) and American GPS system? Radio Frequency Accuracy guaranteed Modulation Area Covered Engineering ...
0
votes
0answers
9 views

How to retrieve the processed file name, file path and save the result in a csv file using arcpy?

We have a list of feature-classes which are in multiple gdb's in multiple folders. This code is opening the csv and doing "GetCount_management" for the listed feature_classes alone and printing the ...
0
votes
0answers
7 views

refresh programmatically created composer

I am trying to create a composer using pyqgis. Everything works as expected. The only difference compared to the manual creation of a composer is, that I am not able to update the layers (by pressing ...
-1
votes
0answers
4 views

Export attributing table values to XML

Please anybody help me how to export attribute table values to XML format! Thanks
0
votes
1answer
171 views

Is it possible to show 3d models using QGIS?

I can show vector layers from PostGIS using QGsMapCanvas and QGsVectorLayer in my standalone application. But now I need to show 3d models, for example 3dmax or sketchup, of some buildings over vector ...
0
votes
0answers
16 views

Free satellite images for academic purposes

Since the Landsat mission opened it's archive a lot of great scientific studies have been produced in the field of Remote Sensing. The Sentinel imagery from ESA is also thought to be open access ones ...
1
vote
1answer
48 views

Using Panoply command line scripts

I have been using Panoply for a while now, and I noticed that you can export a command line script to reproduce the figure. If I look at the first lines of the script, it tells me that I should run it ...
0
votes
0answers
7 views

SRID and lat long values

I am using the following query to generate the lat long values SELECT NAME, ST_X(ST_Centroid(ST_Transform(geom, 4326))) as longitude, ST_Y(ST_Centroid(ST_Transform(geom, 4326)))as latitude from ...
26
votes
3answers
37k views

What are the major differences between GPS, GLONASS and Galileo?

What are the major differences between GPS, GLONASS, COMPASS and Galileo?
0
votes
0answers
19 views

Changing colors of polygon based on numbers in separate Excel sheet using ArcGIS Desktop? [duplicate]

I have a shapefile and a separate excel Sheet. I want this shapefile to interact with the excel sheet. I have assigned numbers associated with colors on this sheet, what I would like to do is have ...
0
votes
0answers
1 view

Plotting a NetCDF with only 1 grid cell using Panoply

I have a .nc file with only 1 grid cell (1 latitude and 1 longitude). Whenever I try to plot it in panoply, of course, all the variable appear to be 1D. Is there a way to plot the point together with ...
-1
votes
2answers
37 views

How can I import KML from ArcGIS MapServer into QGIS 2.8.3?

Can I import KML from http://gis.nature.cz/arcgis/rest/services/PrirodniPomery/Geomorfologie/MapServer into QGIS 2.8.3? I´m not sure with the duplication. I extracted KML file from KMZ and then I ...
0
votes
1answer
8 views

Checking if ModelBuilder model is in use by testing for Schema locks?

Is it possible to get ArcGIS to check if someone else is using a model by checking schema lock and potentially display an error saying that it is already in use and maybe provide information on who it ...
0
votes
0answers
7 views

What is the difference $GPRMC and $GPRMCA?

What is the difference between $GPRMC and $GPRMCA strings? I can find online documentation about $GPRMC strings, however I have a device that sends $GPRMCA strings. ...
0
votes
0answers
4 views

How can I change the name of a coordinate system in SAFE FME?

Every time I use SAFE FME to write data in the coordinate system EPSG:25832 FME names it NUTM32. I them have problems reading the data in ArcGIS Desktop because it doesn´t recognise the name NUTM32. ...
0
votes
0answers
8 views

Postgis spatial join performance (point on area)

I need to update a single attribute of a large table of point data with a result of a spatial join (point on area operation) on a polygon table. Im using the below query but wondering if this is the ...
2
votes
0answers
28 views

Basic statistics function on certain attributes stops at 6% on certain layer in QGIS?

I am trying to use the basic statistics function in QGIS on an attribute in a vector shapefile but it reaches 6% and then gets stuck and does not load anymore. It works fine on other layers/other ...
0
votes
0answers
7 views

Linestring segment completition?

I just extracted some river paths from some old maps I acquired a few weeks ago, they seem accurate enough and will be very interesting to put against my theoretical mapping calculated by using the ...
-1
votes
1answer
13 views

“First” and “Last” from Global Forest Change [on hold]

What are the "first" and "last" rasters provided by the Global Forest Change data set?
1
vote
0answers
17 views

How much Vector Grid is intersected by another polygon layer using ArcGIS for Desktop?

I have a grid 5X5 sqkm and another vector layer with 2 different land cover type (let's say "forest"/"no forest"). I wish all the squares composing the grid to get a value ranging from 0 to 1 ...
0
votes
0answers
8 views

Imagery Band order for Natural and False color imagery

I have an image which has had its band ordering rearranged, giving it a weird false color. I wanted to change it back to a natural color, so I used GDAL and through trial and error got the bands ...
1
vote
1answer
19 views

count if a row value is within a dynamic range?

I am after doing a COUNTIFS in python. I need to check each row ± 250 with other rows and if this row is between that range then count 1, then next row, .. and do the same thing. and if there are any, ...
2
votes
1answer
272 views

Graduated symbols drawing order not displayed correctly

When I use graduated symbols for a polygon layer to display population density, the layer is always displayed on top of all the other layers even if I dragged it to the bottom of the Table of ...
0
votes
0answers
7 views

After Feature Layer reference is added all dojo references are not recognized

I'm creating a simple javascript management system in which I have to query 6 feature layer services, edit, add or delete data from the services. Every time I want to add the Feature Layer reference ...
2
votes
0answers
40 views

Inset map in print composer shifts when saved as pdf

I'm working on a map in the print composer window of QGIS, with an inset map showing a larger extent and highlighting the area of my main map as an overview. Everything looks good in the print ...
2
votes
1answer
14 views

QGIS 2.14 Couldn't load plugin 'processing' due to an error when calling its classFactory() method

I understand that my problem originates from the letters in my username which apparently are non-ascii and very Nordic. I just have absolutely no clue how to get around this. I'm on Windows 10 64bit ...
0
votes
1answer
21 views

How to configure Geoserver to use a proxy when accessing external services?

I don't want to access my geoserver behind a proxy. I can access it directly. It is in same network as I with no proxy between us. I have a Geoserver and created some layers consuming WMS services ...
0
votes
0answers
16 views

Converting polylines coordinates stored in PostGIS in column type text, in another column type geometry(MultiLineString,2154)?

I want to draw a polyline on a leaflet map and then send it to PostGis with php. I’m drawing my polylines using the Leaflet draw plugin and send the coordinates in a column “coords” in PostGIS with ...
2
votes
2answers
37 views

Copy DEM attributes to a vector point?

I have a point that I drew on a tiff DEM file in QGIS. The point doesn't have any information in the attribute table except an ID of 1. How can I make it copy the raster information based on the ...
0
votes
0answers
9 views

Can GlobalMapper open Personal Grodatabase (MDB( without ArcGID license?

I am wondering if GlobalMapper can read an .mdb geodatabase without an ESRI license? I have encountered some apps that can not read a .gdb without the license but can read an .mdb, so wondering if ...
0
votes
2answers
21 views

Saving array of objects in PostGIS field?

It is possible in PostGIS to save an array of objects in a field? (timestamps) For example, a spatial table with the fields: "name", "timestamps" and "the_geom" would look like in json as: ...
1
vote
0answers
24 views

Complex QGIS Relations

I need QGIS to display combo boxes when editing for certain fields in a table, very similar to the functionality provided by the Relations properties in the project settings. It seems this is ...
1
vote
1answer
59 views

Pyqgis : how to close composer window?

I would like to load new composers from template files (*.pqt) when I open my plugin. I managed to do it using this helpfull post Programmatically import new composer from template to project using ...
0
votes
1answer
16 views

Geoserver authentication

I created a user, password and a role, granted access to the layer 'myfeature' only for that role. Now I want to test whether the access restriction works, but I cannot find any documentation about ...
-1
votes
0answers
17 views

How to add dynamic text in standalone PyQGIS to reflect iteration of layer names

I am working with a standalone PyQGIS script below with the help of @gcarrillo. The script exports the "boundary, climits, and Div1_Irrig_1956_0" layers as one png. The script then exports the ...
0
votes
1answer
25 views

Seeking C++ api to read/write PostGIS?

I need read/write geometry object from PostGIS. Is there C++ library to do this?
0
votes
0answers
8 views

Selecting cells with values from DEM those are above specific value corresponding to each polygon?

i have a shapefile with 2000 polygons and a DEM. i want to calculate zonal mean for each polygon considering values from DEM which are above a particular value for each polygon. i want to it with ...
0
votes
0answers
17 views

ArcMap Layout Templates

I am designing a number of maps for a report and I was wondering is there a location where I can download different layout templates as the default ones in arcmap don't suit what I'm looking for?
0
votes
2answers
43 views

R: creating an error matrix from two rasters

I have two land use rasters (6 classes each) and I'd like to create an error matrix (errors of omission and commission) from them both. The premise is that I have a very fine 'base' raster and have ...

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