1
vote
2answers
283 views

Accessing advanced symbol levels with python in ArcMap

Does anyone know if it is possible to access the symbolgy levels in ArcGIS10 with python? I have a layer "temp" that I print to a pdf. The symbology is printed correctly but is drawn in the wrong ...
2
votes
2answers
50 views

Convert/display grayscale image as RGB

i want to display raster images using a color palette in a leaflet map. The images are tiled (gdal2tiles) from a single .tif to multiple .png files with values from 0 to 100. I add the image using ...
0
votes
1answer
28 views

How can I compute global triangulation from longitude/latitude coordinates?

I want to calculate an approximate location based on these inputs: 3 locations identified by latitude and longitude anywhere on a planet 3 angles, indicating the approximate direction from each of ...
8
votes
2answers
4k views

Converting PostGIS table to Shapefile in Python?

I want to convert a PostGIS table into a shapefile (without using pgsql2shp). In order to create a geometry in the shapefile I have to give the Xmin,Ymin and Xmax,Ymax, and the geometry which I have ...
0
votes
1answer
24 views

How to load PostGIS table to Python using OGR in Ubuntu?

I want to use Python to load PostGIS table by ogr. But after I try ogr.open in python (it works if loading a shapefile), I can only get null value. The code is like this: >>> import ogr >...
5
votes
1answer
13k views

Elseif Conditional Statement in QGIS Field Calculator

I am trying to write an ELSEIF conditional statement in QGIS Field Calculator (version 1.8.0). I have used an example I found online: CASE WHEN val < 0 THEN 'negative' WHEN val = 0 THEN "neutral'...
2
votes
1answer
16 views

How do I use mapbox tiles with folium?

I cannot find correct usage for using custom mapbox tilesets with folium. From the documentation, "Folium also supports Cloudmade and Mapbox custom tilesets- simply pass your key to the API_key ...
1
vote
1answer
393 views

Field Equipment: Geneq SXBlue II with iPad and ArcGIS Collector app

My company just recently purchased a Geneq SXBlue II GNSS receiver to be pair with an iPad and the Collector for ArcGIS app. I have heard great things about the submeter accuracy of the unit; however,...
0
votes
1answer
8 views

ArcGIS javascript api application page shows blank page in Internet Explorer

I have a ASP.net application from where I send query parameters (using hyperlink) to a ArcGIS javascript application to show query result on map. Now the issue I am having is, when I first send the ...
4
votes
1answer
59 views

QGIS 2.16 Merge lacks folder option

I've installed QGIS 2.16 and have noticed that the Merge (Vector Menu>Data Management) doesn't appear to have a Folder option anymore. This was the option that allowed you to process/merge a complete ...
2
votes
1answer
817 views

ArcGIS for Server 10.2.1 cache scale greyed out in Service Editor and not all scales available in Manage Map Server Cache Tiles

I am using ArcInfo desktop 10.2.1, with an admin connection to ArcGIS for Server Standard 10.2.1 I have used the "Create Map Server Cache" tool in ArcToolbox to prepare all the underlying structure ...
0
votes
1answer
21 views

Leaflet popups - preserving user input on close/reopen

I am working on a Leaflet map that allows a user to open a popup by clicking on a geometry and then generate dynamic content within the popup. However, I find that on closing and then reopening the ...
3
votes
2answers
276 views

'Read Only' Exception - WFS

I am getting the below exception while editing and saving data in spatial table. Response <ows:ExceptionReport version="1.0.0" xsi:schemaLocation="http://www.opengis.net/ows http://x.x.x.x:80/...
1
vote
1answer
29 views

How to remove subgroup labels from legend?

In print composer legend is it possible to turn off the display of the group name in the legend? So it shouldn't show the DSC_Roads and other items marked with X
2
votes
1answer
241 views

Maps with numbers and postcodes using QGIS?

I have a list of UK postcodes and a number of participants in a survey. I would like to map the first three letters of the UK postcode and I would like a shape....a circular shape for example which ...
8
votes
4answers
5k views

Convert Sql Server Spatial data to GeoJSON & plot on map

I have a sql server table with Geo spatial data. An example of row would be (with Column names): type: streetline code: 231001 geog: 0xE6100000011 ........ Centroid 0xE61000000C....... geom: ...
18
votes
3answers
6k views

Proper way to rbind SpatialPolygonsDataFrames with identical polygon IDs?

What's the proper R idiom for rbinding SPDFs together when the IDs overlap? Note that here (as is often the case) the IDs are basically meaningless so it's pretty annoying that I can't just make ...
0
votes
1answer
25 views

Button to turn off all layers in ToC at once?

I have created a map that has a Table of Content that i use to turn on and off desired layers. Is there a way to create a 'Clear' button that will untoggle the selected layers? I have a clear button ...
0
votes
1answer
20 views

In R's raster::terrain function, which way is north?

The terrain function in R's raster package calculates slope and aspect from an elevation raster: see http://www.inside-r.org/packages/cran/raster/docs/terrain. With the unit="degrees" option, the ...
0
votes
2answers
278 views

Can I use my SearchCursor in Select by Location

I am trying to select the largest polygon that contains each feature in a feature class but none of the features in another feature class. I have written the code that seems logical to me but (of ...
1
vote
0answers
11 views

QGIS Plugin -> QgsVertexMarker points missing: Anyway to find out which points are not visible?

I am trying to plot live feed of three GPSs running at 10 hz using my own QGIS plugin. I was using QgsRubberband initially which worked fine. I recently added QgsVertexMarker to plot every data points ...
0
votes
1answer
977 views

How to calculate degrees per pixel in a given image? Or .nth of degree?

I am trying to make very rough estimates of Lat/Long coordinates in some random parking lot images. If I visit any such random parking lot on a Google map, I can click some driving area and Google ...
0
votes
1answer
2k views

Draw order (zIndex) of OpenLayers polygons and points in the same layer

My question is similar but slightly different from this one: http://stackoverflow.com/questions/5003349/openlayers-vector-features-z-indexing I have an OpenLayers Vector layer which contains polygons ...
0
votes
0answers
27 views

000800 error for versions only when working in a geodatabase that uses an Operating System Authentication for its connections

I wrote a toolbar that takes some input and uses it to modify an SDE geodatabase. It usually works well in a geo database that uses Database Authentication for its connections , but recently I ran ...
0
votes
1answer
8 views

tilestache url format

Documentation at http://tilestache.org/doc/#over-http says this is the format of requesting your tile /{layer name}/{zoom}/{column}/{row}.{extension} Now, my question is what column and row stand for?...
2
votes
1answer
571 views

Remove selected feature symbol

Background: I am dynamically populating a feature layer. On this feature layer I have set the symbol (as you can see) to a nice little .png image. Everything seems to work fine around the layer except ...
0
votes
0answers
26 views

QGIS Server 2.12.14 Errors with Oracle

We are using QGIS Server to serve Oracle SPatial (11.2.0.4) to a spatial viewer. There is 16Gb of RAM. The number of concurrent users is 100-150. QGIS Server is on Windows Server 2012 R2 with 16GB of ...
1
vote
1answer
28 views

Why domain range failed?

I created domain range and added into my field. The range was 0-100, nevertheless I could fill 359 into the field. Do you have any idea where is a problem? I am working with ArcGIS 10.4 for ...
0
votes
1answer
93 views

Looking for succesful implementaion of PPDM in form of geodatabase

I am have difficulties in implementing spatial version of Professional Petroleum Data Management (PPDM) for our GIS database. Does anyone have a reference to a sucessful case of implementing PPDM in ...
1
vote
1answer
36 views

How do I create a map that displays only polylines that contain a particular attribute value?

We have had a consultant create 7 options for a series of remote road networks. The options share segments so Option A contains segments 1 to 6, Option B contains segments 1 to 5, 7 and 8, Option C ...
5
votes
1answer
253 views

How to set up a QGIS project with SQL Server which can be opened on another computer?

I am using QGIS with SQL server 2008. I need to save project on one computer and then copy project to another 20 clients! After I save project and try to open it on another computer I am getting ...
1
vote
1answer
285 views

Exporting .tif from referenced mosaic dataset does not use functions in raster dataset

Very frustrating little issue in ArcGIS 10.1 -- I have a referenced mosaic dataset of terrain data that has a series of functions inserted (slope and several iterations of a statistics function to ...
1
vote
1answer
31 views

Simple POLYGON works for Geometry, goes nuts for Geography

I am trying to do some rough conversions on existing data in SQL Server, and I've run into a fundamental problem: some values result in absolutely insane Geography values (completely different than ...
0
votes
1answer
14 views

query postgis raster map with the dynamic request?

Can parametric SQL View be used for postgis raster map in geoserver? Or how can I query postgis raster map with the dynamic request?
2
votes
2answers
726 views

Openlayers 3 Vector Layer transparency

I'm having a hard time to get my vector features showing as i would like to. I have a geojson file with polygon which overlaps. They are generated with OpenTripPlanner and the features are isochrones. ...
0
votes
0answers
10 views

How to draw branches on a LineString in OpenLayers 3?

How to draw a branch (a LineString) after clicking on an exiting LineString in OpenLayers 3? The branch is supposed to start from the clicked point on the LineString. There is a difficulty: ...
0
votes
0answers
18 views

How to lock plugin window some where in QGIS left panel area?

IF we click on internally created plugin then a separate dialogue box appear. I need to make it fix some where near the left pane. Like if while editing we click on Advance Digitizing Panel then its ...
0
votes
1answer
133 views

Add REST map service to basemap

I have created a JSON file which includes 30 map service layers and their attributes. This includes the map service url. My function creates a table of contents from the JSON object so that when I ...
0
votes
0answers
21 views

Wildfire burn boundaries and downstream water flow

I am currently working on understanding how many stream miles have been effected by wildfire in the US over a long time frame. I am running into a problem in which I am trying to extend the data ...
2
votes
1answer
24 views

Direction of the Y axis in OpenLayers

A have an openlayers map with with two layers: a Tiled image layer (served through zoomify protocol) and a Vector layer. I draw boxes/rectangles on the image then get their geojson coordinates and ...
0
votes
0answers
19 views

ArcGIS - Filter Neighbor-pixel-values in DEM?

Working with ArcGIS 10.2.2. I have a DEM (GRID) in floating points. What I want to do is "clean" the grid by a 3x3 or 5x5 filter to identify and eliminate neighbors with the same value as the cell ...
1
vote
0answers
8 views

Multiple prompts when logging in outside of domain

I work entirely with secured services in CMV and everything works fine when using them on a computer that is within my company’s domain. Our IT has it setup so that you are prompted once to login to ...
0
votes
0answers
8 views

What is a Station Variable?

I am using the Multidimension Supplemental Toolbox, Zonal Statistics in ArcMap and I continue to get an error stating 'Variable is not a station variable'. What does this mean and what can I do to ...
0
votes
1answer
14 views

kde.points SpatialPixelsDataFrame to geojson

I have a multiple projected spatialpixelsdataframes produced from kde.points() and would like to use it in a leaflet map. Basically the same as Brunsdon example with the New Haven crime data, except ...
0
votes
1answer
28 views

Text time to datetime field not working [on hold]

I have a text field in a FGDB with time in the format hh:mm:ss and would like this to be a datetime object in a new field. I don't think FGDB can use only time and require a date, it would be fine if ...
1
vote
1answer
39 views

Split lines at points using Shapely

I'm trying to split a shapefile of geometry type 'line' at a shapefile of geometry type 'point. These points are snapped to the lines and are the start points/end points of other line shapefiles. ...
4
votes
0answers
21 views

Why is Shapely's snapping (GEO snaps) not working as expected?

I'm trying to snap two lines to each other using Shapely/Geopandas but the result of the snapping is very odd. I tried : import geopandas as gpd from shapely.geometry import * from shapely.ops ...
0
votes
1answer
23 views

Mosaicing rasters in arcpy

I am mosaicing rasters in arcpy but it is returning the error, AttributeError: 'module' object has no attribute 'MosaictoNewRaster_management' I am using the code: import arcpy from arcpy.sa import *...
-1
votes
0answers
10 views

Predicting (forecasting) Land-cover

I have 4 layers of past and base on them I want to predict the future land-cover expansion or compression.. I understand there are many models like SLEUTH and many other but I just want a simple ...
2
votes
0answers
28 views

Time-slider in ArcGIS skipping once exported to video

The set-up: I am using ArcGIS 10.3. I have exactly 528 raster maps in a mosaic dataset. Each one corresponds to the same geography but at different months (from January 1969 to December 2012). I would ...

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