0
votes
0answers
17 views

QGIS 2.8.2 Road Graph doesn't accept road network vector

I'm using the Finnish official Department of Transport's "digiroad" road network vector file, which has all kinds of roads, cycle paths etc on it, but I can't use Road Graph on it. If I create a new ...
1
vote
1answer
22 views

How to write a vector layer as tab delimited txt file using PyQGIS?

I'm using the following QGIS 2.8 Python code to save results to a txt file QgsVectorFileWriter.writeAsVectorFormat(inputLayer, "D:/dstest/my_csv", "CP1250", None, "CSV",True) I would like to be ...
0
votes
0answers
19 views

Identifying Left and Right Mouse Button Clicks in PyQgis application

I am relatively new to PyQt. I am trying create a custom plugin for Qgis which enables the user to select some features by drawing polygon on the canvas using mouse clicks and then performs ...
0
votes
0answers
4 views

Not able to use Find by Layer feature in ArcGIS Online, when data is url .csv?

In AGOL, when using Layers linked with a url to a .csv, the 'Find' by layer feature in the Details/Edits section is not active. Meaning that layers cannot be searched using the 'Find' feature. Is it ...
1
vote
0answers
18 views

OS Terrain 50 into Postgresql/PostGIS for lat/long analysis

I am performing analysis using line of sight's and followed a very useful blog post at http://davidrowley.blogspot.co.uk/2013/08/calculating-line-of-sight-with-postgis.html which detailed how to load ...
1
vote
1answer
15 views

Error when creating new view using ST_Union (PostGIS)

I have a table in PostGIS (2.1.7) containing adjacent multipolygons, and I'd like to create a view containing polygons which are merged versions of the multipolygons based on some field value. I ...
0
votes
1answer
19 views

Geoserver : FAIL context path doesn't start

I've been manipulating Geoserver for some time without any problem. Today,when I start Apache Tomcat , Geoserver doesn't start. I get this error message : " FAIL - Application at context path ...
0
votes
0answers
14 views

tracing tool in arcmap Problem

I need to edit my road polygon based on road edge,however,i have problem with that tools.Certain area i manage to use the tracing tool but certain area the tools like not functioning.. Any idea to ...
1
vote
0answers
20 views

Masking in ArcMap

I have question on masking. I have vegetation group layer. Under vegetation group layer, there are 3 layer which are V_Vegetation_Miscellaneous_A, V_Vegetation_Agriculture_A, V_Vegetation_Forest_A. ...
1
vote
2answers
42 views

How to close a polyline in QGIS while digitizing?

We need to work on a line layer where some features are closed and some are open. The closed features need to be closed perfectly, so that the first and the last point of the polyline perfectly match. ...
0
votes
0answers
15 views

is it possible to make a continuous line using SVG in SLD? [duplicate]

I am trying to make a line with thinner one side outline using SLD in GeoServer (like this: ). Since GeoServer is not support perpendicularOffset element yet, i cannot move the thin line to the edge ...
0
votes
0answers
5 views

GeoTools WFS Authentication

I have a connection with basicAuthentication, the getCapabilities and getFeatureStore return me correct data but when i try to commit a transaction I get the next exception: "HTTP response code:401 ...
0
votes
0answers
18 views

Can I mimic the “open” action with python and manipulate the field content used for the action?

I am using QGIS actions (type: "open") to link ECM searches to objects on the map. The basic syntax is very simple: protocol://searchterm1=[%"field1"%]&searchterm2=[%"field2"%] However, some ...
0
votes
1answer
29 views

moving user by gps and show interested points

Is it possible in a Web application with google maps, to use a user his mobile gps and when move and is near on an interest point such as hotels, interested point i have stored in a Postgresql ...
1
vote
2answers
32 views

Changing longitude,latitude to latitude,longitude in OpenLayers 3?

Openlayers is representing the coordenates as longitude,latitude. Can I change the default format longitude,latitude to latitude,longitude? By example, this will not work, because I have this array ...
0
votes
0answers
13 views

R to ArcMap, erroneous change of spatial reference

I have SPOT5 imagery from Northern Sweden / Finland. Data is downloaded from SACCESS service and is provided in Sweref99 TM projection. When opened in ArcMap the data is shown in Sweref99 TM as ...
0
votes
2answers
55 views

Why the execution of a query is very slow using PostGis?

I'm applying this Query to 8257800 point but it's taking 15 hours and it didn't return a results. SELECT a.gid , b.gid, st_distance(a.geom,b.geom) FROM shp1 a, shp2 b where ...
0
votes
0answers
21 views

Quick way to select by attribute and zoom to selection in QGIS

I need to visually control hundreds of points in a layer on top of aerial photographs. Using the attribute table, selecting (with column filter expression) and zooming manually is cumbersome - so I ...
1
vote
3answers
48 views

Best projection / CRS for short-distance based analysis?

I'm having a bit of meltdown about projections and coordinate reference systems, and was hoping for a few pointers. I have 3 GIS projects, at 3 sites in Europe (the largest of which measures about ...
1
vote
0answers
15 views

Option windows in ArcGIS clipped out

I recently started using 10.2.2 in my new laptop and I'm having trouble in the 'pop-up windows' like the option windows inside the application (pls see the attached figure). The options windows are ...
0
votes
0answers
8 views

openlayer 3 support for wms 1.3.0 CRS:1

I am trying to get a TileWMS layer working with the CS as CRS:1 defined in WMS1.3.0. By defining the right projection stated in CRS:1, axisorientation as 'es', I could get it working for ImageWMS. ...
0
votes
0answers
18 views

Customizing timeslider labels using ArcGIS API for JavaScript?

i'm use javascript ArcGIS map with timeslider, and now have problem with timeslider labels - with large number of timestops labels are overlaps Show only part of labels is not solution - timestops ...
1
vote
1answer
25 views

Taking a long time to load tables from oracle to QGIS

My workplace has an oracle database with a very large number of spatial tables. Therefore, it takes a long time to load the oracle connection in QGIS. Does anyone know how this could be speed up?
0
votes
1answer
18 views

Batch Mosaic Rasters: arcpy.MosaicToNewRaster_management (ERROR 000628: Cannot set input into parameter coordinate_system_for_the_raster)

I am trying to batch mosaic rasters using arcpy.MosaicToNewRaster_management in arcpy: #This is for mosaicking a lot of rasters import arcpy from arcpy import env ...
0
votes
0answers
13 views

Convert polygons to optimized lat long radius

I have a research project where I need to search Instagram and Twitter for geo coded data. The APIs allow lat, long, and radius, but I have shape files with polygon shapes and some long lines (think ...
0
votes
0answers
25 views

What is coordinate system of US 1990 census tract data

I would like to set coordinate system of US 1990 census tract data using ArcGIS for Desktop. Do you know how I can do this?
0
votes
0answers
19 views

How to make a map showing the slopes of the terrain

I am not too familiar with techniques, and was looking for ways to make a slope map for a given area. It ended with finding this site and posting the question. We are in the process of zoning a new ...
1
vote
0answers
19 views

How to make symbolizers use attribute values in OpenLayers.Layer.WMS?

I know it works like a charm for vector layers. But considering that we can make the symbolizers use attribute values in the SLD, I think OpenLayers should support it. But apparently it doesn't. In ...
0
votes
0answers
10 views

Collecting the all the outputs from the iterator in model builder to single file [on hold]

I am using the model builder for integrating some of the Network Analyst tools. However, after running the model only the last output is being saved, as the one output is replaced by the other output. ...
0
votes
0answers
18 views

How do I get an .mxd or .adf file to work in iGIS?

I'm working with some LiDAR data that's been converted into .adf, XML, and OVR files to upload to ArcGIS. All works fine on ArcGIS, but I'm trying to add the hillshade map that I have on ArcMap (in ...
0
votes
0answers
20 views

Importing tif image from PostgreSQL Database to webpage

I am trying to import tif images from PostgreSQL Database to my website. In the website, I need to make a button control which will open the images. I think I have to use Pyhton as a server side ...
1
vote
0answers
31 views

Create new attribute ranking polygons by size in QGIS

I'd like to create a new field in the attribute table which gives the rank of the polygon by size. For example, the polygon of the largest size would be rank 1 and the smallest rank N. I was hoping ...
0
votes
0answers
27 views

GeoJson and D3.js multipolygon

I have this geometric shape file, so no map of a city. I store the two Shapefiles in a GIS database as a geometric form. Now, I want to visualize the geojson data. I created the GeoJson data ...
1
vote
2answers
33 views

How to define PROJ.4 string for GDAL projection

I'm doing some zonal computations in GDAL using the code posted in the solution here: Issue Trying to create Zonal Statistics using Gdal and Python. It runs fine for me using the example data posted ...
2
votes
0answers
33 views

Good GPS navigation app for iPhone with downloadable OFFLINE maps?

I am looking for a good GPS navigation app for my iPhone that will work away from wifi and cell coverage (GPS only) and thus allow me to download offline maps. Paid app is OK. Must Have features: ...
-1
votes
0answers
30 views

Using ArcPy to display result shapefile with layer symbology?

I am using an ArcPy script, and everything is working perfectly except the display of the result shapefile file. What is the best solution to display the result? In the end I would like to share ...
0
votes
0answers
8 views

Ecognition, utilization of feature space optimization [on hold]

I want to use feature space optimization tool in ecognition, but it's empty on shown class list resulting in i cannot select class. The point is i have set up my class hierarchy. Could anyone help me? ...
1
vote
0answers
23 views

Are there limitations for QGIS Composer images larger than 32768 pixels?

We are outputting a map file with composer : size 45,312 pixels width and 4,352 pixels height in TIFF and PNG format. The map is calculated but in the file we have only 32,768 pixels width show, the ...
0
votes
0answers
9 views

Rules for scale specific layer style in GeoServer

I've got a very large polygon land cover map (millions of polygons) over a large area. Our first try at serving the data through GeoServer WMS was not very successful due to the large amount of small ...
1
vote
1answer
29 views

OpenLayers 3.5.0, clear highlighted feature after removing feature from source

I want the user to be able to delete the highlighted feature. This works well, but the feature is not cleared until I move the pointer outside the feature geometry. I am using the OL 3.5.0 library. ...
0
votes
0answers
15 views

Arcmap 10.3 crashing on launch using either existing MXD or just launching app

I recently upgraded from 10.0 to 10.3 and am having a LOT of crashes when trying to launch the app. I have been using MXD's started in 10.0 but re-saved under 10.3 as well as ones started fresh in ...
0
votes
0answers
21 views

Raster data in R to merge to a time series

I have gridded data files about 2000 ( see sample -each file consist of monthly rainfall and is label pYYYYMM) https://www.dropbox.com/sh/63z166tjxyu12s5/AAAs3Ccn1zdVoBYMj8Y1o303a?dl=0 ...
4
votes
2answers
105 views

Advanced python labeling in ArcMap - working with null values

I'm trying to label certain features using a specific field (osm_name_58_en). However, when this field is null, I want to label the feature with (som_english_32_name). If both are null then I want ...
2
votes
1answer
35 views

Save a table in ascending order in QGIS [duplicate]

Is there a quick way to sort an attribute table in QGIS in ascending order permanently and save it? My third column is an integrer, of course if I clik on the header the table will be sorted in ...
0
votes
0answers
25 views

How to merge two rasters when are on the same place

I have two rasters in GRASS GIS. first : raster of DMR, raster picture of relief - created from high values second : raster of buildings where pixels of every building have value of high of this ...
1
vote
0answers
13 views

Creating Shape by Density Criteria using QGIS?

I have a map with points plotted. Is there a way that I can make a circle of a certain radius (let's assume 10 miles) if the density of points in any given 10 mile radius is over a certain number?
0
votes
0answers
12 views

Cannot draw geometery on WorldWind

I'm trying to draw my geometery on worldwind but it keeps saying WARNING: Unspecified coordinate system and draws a default blue line in the middle of nowhere. The procedure is that I populate ...
1
vote
0answers
22 views

moving window regression on raster stack in R

I want to perform a moving window regression on every pixel of two raster stacks representing Band3 and Band4 of Landsat data. The result should be two additional stacks, one representing the ...
1
vote
1answer
25 views

Auto-update a feature class with Python + .csv?

I am hoping to find out how to automatically update a feature class. We have semi-regular updates to an ArcGIS Viewer for Flex website. Looks like a Python script may be the way to go about it (and I ...
0
votes
0answers
8 views

Regroup SHP files and convert to one MBTiles file

I have a lot of shp files and i want to regroup all of them and export the whole thing in one mbtiles file (and display this with MapBox GL). I tried MapBox Studio but it's crash a lot ! Any ideas ?

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