4
votes
1answer
95 views

Why are there no more error messages after importing QGIS modules into python?

I have a problem when writing python code whilst including the qgis modules. As can be seen below, when I usually call a variable that does not exist (for example), I receive the usual error message. ...
2
votes
1answer
323 views

Can ArcGIS Online navigate and identify large GIS datasets? [closed]

For my upcoming project, I want to see if ArcGIS Online can provide a viable solution. Users will need to have access to webmap on their desktops with basic navigation and identify. This will be an ...
1
vote
3answers
832 views

Why would Dissolve stop working in ArcGIS for Desktop?

I have an ArcMap Add-In that completes various geoprocessing steps, including Dissolve (using ESRI.ArcGIS.DataManagementTools.Dissolve). This tool worked at 10.0, but I just upgraded to 10.1 SP1 and ...
0
votes
1answer
325 views

Why can't I open a kml layer?

I thought that I could open kml layer like a normal vector layer but it doesn't work (it says "invalid datasource"). How can I open a kml layer in QGIS? Or how can I open it anyway, I never worked ith ...
0
votes
1answer
385 views

batch buffer with different distances with python 2.7 in arcgis 10.1

I am trying to write a "smart" way in Python to process multiple buffer to lines, polygons and points with different distances. I use Python and ArcMap 10.1. I can figure out to separate lines, ...
1
vote
1answer
251 views

Taxi fleet simulation - MATSim a useful tool?

I am working on a university project and I would really appreciate some advice: My project consists in modeling the taxi fleet of a major city and investigating if replacing a percentage of the fleet ...
0
votes
0answers
31 views

Geological/geographic dataset or query language? [closed]

I'm looking for a dataset that I can ask questions like "which points on the entire earth get the most fog in December and have the steepest terrain?" and "how many people living there speak English ...
0
votes
0answers
145 views

need help creating layer with geom type wkbGeometryCollection with gdal python

I am having trouble creating a layer with geom type as geometry collection. Thus I am unable to output to a shapefile. I have attached code below. dstLayer is null. This does not happen if geom type ...
5
votes
2answers
9k views

How to get the data type of each column from a postgis table

I need to get the column data types of all columns in a table, including the geometry types. What I wanted to know is if there is a function or SQL that gives something like this: column_name | ...
1
vote
1answer
1k views

Setting a renderer that uses a function for a dynamic layer in ArcGIS JavaScript API

How can I, if possible, set a renderer for an ArcGISDynamicMapServiceLayer which uses a function to determine feature values instead of just attribute values? When using the following code, the ...
0
votes
1answer
237 views

Error when calculate field using VBscript or Python (slice a field)

I have an expression in VBscript that works well for labeling: Function FindLabel (field) if (INT(RIGHT(field, 2)) <> 1) then FindLabel = INT(MID(field, 8, 3)) &"-"& INT(RIGHT(field,...
1
vote
0answers
154 views

Where to get UK city boundaries

Currently I am working on a project where I have to draw boundaries of specific region of UK. Exactly like this I want to know where to retrieve this kind of GIS data. I have tried openstreetmap data ...
1
vote
1answer
705 views

How to draw an arc by centerpoint, radius and azimuth in KML

The question is how to generate lon/lat coordinates for an arc/sector. Coordinates can be used/filled into a KML file. Pointers to geometric formula or a program applying the formula are much ...
1
vote
0answers
219 views

Bing Open layer shows ok in QGIS and Composer Preview, but is misaligned after exporting to PDF

I have QGIS 2.2 running on a Mac with iOS Maverick. I have prepared a map with layers with different CRS, including a Bing Open Layer as base layer. The project has the 'On the fly coordinate ...
1
vote
1answer
141 views

ArcGIS 10.1 make Form onTop with C#

I have a windows form which opens with my ICommand, referenses IApplication and does some staff with it( it is not relevent ). The problem is that I want it to be onTop within ArcMap, and minimized if ...
2
votes
2answers
865 views

Plotting property surveys using AutoCad MAP2013 - Draw arc problem

This is likely a simple question that I just can't seem to answer. I am plotting some surveys in AutoCad Map3D but I simply can't figure out how to draw an arc using survey coordinates. The large ...
3
votes
2answers
125 views

How to deal with Roundabouts in PgRouting

Can anybody guide me to to deal with roundabouts in pgrouting?? I have some roundabouts in my road network and when i try to make route from one point to another, it gives me wrong direction where it ...
0
votes
1answer
175 views

problem in spline with barriers in ArcGIS 9.3?

I am trying to use the script tool "Spline with Barriers" from arcgis 9.3 3D Analyst toolboxes. I am not getting expected output. The output is just only one value over the surface. We are using ...
4
votes
2answers
66 views

What are license options to share and distribute ArcGIS ModelBuilder toolkit?

Do you have expertise or experience to share on what software license can be used to share a model created in ArcGIS ModelBuilder to ensure that it is free to use, or used for non commercial purposes. ...
5
votes
2answers
2k views

Error exporting data from Oracle to shp using ogr2ogr

I have an oracle table which I would like to query/make a selection. I would then like to export the selection to a shp file. I'm using gdal and ogr2ogr. Following the guidelines here and here I ...
2
votes
1answer
191 views

How to use matplotlib with ArcGIS 10.1 without Microsoft Visual C++ Runtime Error?

I have problems using the matplotlib for python with ArcGIS 10.1 If I run the code below as a script tool in ArcMap. No pdf is generated and when I close ArcMap this error is shown. If I run the ...
1
vote
1answer
376 views

reproject vector layer with pyqgis with new CRS does not worl

In QGIS I am running a script in th python toolbar to export all visible vector layers to a GEOJSON with this snippet: canvas = qgis.utils.iface.mapCanvas() allLayers = canvas.layers() for i in ...
1
vote
1answer
289 views

Why can't I open QGIS projects via windows explorer?

We have upgraded from QGis 1.8 to QGis 2.2. Qgis 2.2 is first installed, then 1.8 removed. Since then it is impossible to open .qgs-projects directly from windows explorer. We have checked explorer, ...
1
vote
1answer
64 views

QGIS hides few graduated points after reopening project

I have a strange problem in QGIS 2.2 (problem is also present in QGIS 2.1). When I add a point (shapefile) layer, apply graduated style and change point size, everything looks fine. Then I save ...
0
votes
1answer
71 views

Using OpenLayers and OpenStreetMaps to display statistical information with colors : possible?

I'm planning to build a statistical tool using OpenLayers and OpenStreetMaps. This tool will have to display statistical data for french departments with colors. What I would like to do is the same as ...
1
vote
1answer
56 views

QGIS 2.2 crashes when saving digitized data in ArcSDE 10.1

I am using QGIS 2.2 with ArcSDE 10.1 for Oracle 11gR2 I have created a polygon feature class with SDO_geometry, when trying to save the digitized data QGIS crashes. Please help, I want to edit the ...
1
vote
0answers
512 views

Working with GeoServer and MongoDB

I am trying to get MongoDB working with GeoServer. I am using the BoundlessGeo Suite (comes with GeoServer and other tools) I was able to find the MongoDB extension for GeoServer. Got it installed ...
0
votes
1answer
154 views

problem login geoexplorer - redirect IP

I have problems when I want to log the administrative user through GeoExplorer when geoserver is running on a server with public ip but redirection to a private ip. GeoExplorer takes too long to load ...
1
vote
2answers
174 views

What does it mean if a topographic map is indicated to be “West of fifth Meridian”

The Natural Resources Canada topographic map A 741, 83 C/7, edition 3 has a (bilingual) indication at the bottom stating: WEST OF FIFTH MERIDIAN       OUEST DU ...
0
votes
1answer
331 views

gdalbuildvrt error when mosaicking SRTM data with different NoData values

I'm attempting to mosaic together 9 SRTM tiles downloaded from CGIAR to produce a DEM of Borneo. I'm using: gdalbuildvrt Borneo.vrt BorneoSRTM/*.tif where BorneoSRTM contains the 9 tif files to be ...
0
votes
1answer
256 views

Creating a New Shapefile from Joined Access Table

I'm dealing with a very large amount of polygons. Once I join the land use access table to the parcel shapefile, it takes forever for Arc to draw the polygons. I'm trying to select all residential ...
5
votes
2answers
330 views

What is the the color gradient at borders called?

Many paper maps have an effect around the borders where there is a gradient from the darker color of the borderline to the lighter color of the area fill. What is this effect called? See http://www....
2
votes
0answers
296 views

Leaflet Drag and drop to change existing markers

I'm working on a project where the user should be able to drag an image to a pre-existing marker and have the marker update color if the value of the marker (a value w/in the geojson) and image (a ...
2
votes
4answers
76 views

How to Add (+) up integers in a field and print a total count in pyhton 2.7

I'm a complete beginner to python. I have what I hope to be a simple question. I want to run a bit of script in IDLE so that it adds up all figures in a table under attribute name "Tot_Aff". When I ...
2
votes
2answers
1k views

MySQL Polygon (Spatial) Insert Statement works sporadically

I know that MySQL doesn't have great spatial support at the moment, but is it that buggy that my insert statements would work sporadically? In general, longer coordinates seem to be failing on insert (...
1
vote
0answers
55 views

Merging of two maps having different data in ecognition

I would like to synchronise two maps having two data (map1 for building and map2 for vegetation) into main map.I used the rule set of "working with maps".But it doesn't merges the data.I am using ...
1
vote
0answers
46 views

Customize LabelLayer extent based on density/location using ArcGIS JavaScript API

I'm using a LabelLayer that can be seen only within a certain minScale - maxScale window. I'm trying to display labels of census tract IDs within Illinois, and the difference in label density between ...
0
votes
0answers
67 views

Importing hours and minutes into a date field, next to the date

I'm trying to clean up some data and make sure dates go into the date field. DateShot is my newly created date field and Date_Shot is my text field I want to convert. It will just return the date ...
9
votes
1answer
169 views

Compute visibility graph on sphere

I have a PostGIS table with some polygons (stored using the geography data type). They represent regions on a spherical earth. For each pair of vertices chosen from among all the polygons, I want to ...
1
vote
1answer
279 views

ArcGIS10.2 Data Merge error: 000732

I am running python in the ArcGIS python window. ArcGIS shows error message when trying data merge from arcpy. File "", line 1, in File "c:\program files (x86)\arcgis\desktop10.2\arcpy\arcpy\...
1
vote
1answer
498 views

Add georeferenced png layer to map automatically

Using ArcGIS Desktop v10.2 with an Advanced level license we have georeferenced our engineering drawings in PNG format. Next we have created a polygon layer for every single drawing to see the Area of ...
2
votes
1answer
2k views

Getting “Points of LinearRing do not form a closed linestring”

I downloaded the data provided here as KML, exported to ESRI Shapefile format, checked it on QGIS and everything looked fine. Upon trying to use the layermapping utility of Geodjango I am getting ...
2
votes
1answer
203 views

Bad calculations with Colombian projection (EPSG:3116) in GeoTools?

Solved, reading mail-archive I can understand that there is a conflict between: gt-epsg-wkt-9.2.jar gt-epsg-hsql-9.2.jar I tested removing each one, with 'hsql' I get the same wrong result, but ...
1
vote
0answers
145 views

Problem with service area gap with Network Analyst

I am working on running Network Analyst to create a Service Area from a single location to all around it. Esri's network dataset was missing a couple crucial street lines, and so I uploading their ...
2
votes
0answers
45 views

Use pgRouting with a PaaS

Is it a way to use a postGIS/pgRouting enabled database with a PaaS like Windows Azure? If not, do you know alternatives?
2
votes
2answers
1k views

How can I get Sokkia total station .RAW file data into ArcGIS

I have a .raw file from a Sokkia total station. I want to view the data in ArcGIS and create contours from this data. Can anyone help? The survey analyst extension is longer supported in ArcGIS 10....
0
votes
3answers
613 views

How to display clickable features from Geoserver over Google Maps v3 Base?

Please forgive what I am sure is a very noob question, but I need to do some research into the best way to achieve this and I am a beginner to GIS. My employer has a Geoserver instance set up which ...
1
vote
2answers
1k views

Searching planet_osm_point by longitude and latitude

I used osm2pgsql to import data into my PostgreSQL database and it put gave me the following 4 tables, planet_osm_point, planet_osm_line, planet_osm_polygon and planet_osm_roads. I have looked at ...
3
votes
4answers
4k views

Creating a Time series NDVI map

I would like to create a NDVI Time Series map? How do I do that? The one I probably would like to have similar like this http://proceedings.esri.com/library/userconf/proc02/pap0593/p05931.jpg I ...
2
votes
0answers
321 views

What is the advantage to using a representation vs a layer file?

I understand that the representation stores the symbology inside of the geodatabase. It creates it's own field for a RuleID. I made a layer file that had 'unique values and many fields' and chose ...

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