3
votes
0answers
129 views

How can I make use of the $scale function in QGIS data defined properties?

In QGIS 2.0 I can use with success the $scale function in the labeling expressions. When I tried to use it for symbolizing in the data defined properties it has a value of 0. Is there a way to make ...
3
votes
0answers
81 views

Filtered SimpleFeatureCollection really slow on Map and other operations

I'm working with a shapefile having about 85.000 features. I need to select some of these using a filter and then showing these on a map. Now... If I draw the entire shapefile's features the creation ...
3
votes
0answers
56 views

How to create a custom enterprise QGIS installer with plugins and symbols?

I am looking at installing QGIS at a company level. I would like my installer to install specific plugins, and add our company map symology. Are there any ways to do this? I have seen post about ...
3
votes
0answers
134 views

How to create a chart of the altitude of points?

I am using shapefiles with basic informations including the x-, y- and z-coordinates. I want to see how the objects (in this case points, which are finds from an excavation) are scattered along the ...
3
votes
0answers
79 views

Linux Tool to visualize CityGML file

I am looking for a linux program that allows me to visualize CityGML models (3D). I have tried a whole bunch so far (most of them via wine but also native ones) but I couldn't get a single one of them ...
3
votes
0answers
61 views

Why are date vaules displaying a trailing 'Z' when layers are published with Geoserver and a PostGIS data store?

I have published various layers using Geoserver 2.2.x with a PostGIS 2.0.1 (PostgreSQL 9.1.x) data store. Fields that only have date values and not time/timestamp related values are stored as date. ...
3
votes
0answers
211 views

Extract values from raster based on weighted average area using polygon grid

EDIT: I am using Armap 10 sp 5 I have found similar questions but they were either unanswered or somewhat different to what I am asking. I have a raster with cell values 1-5 and a polygon shape file ...
3
votes
0answers
125 views

Handling non-spatial data for QGIS projects with Camelot

Most of my projects include data which is non-spatial or which is point data and can be managed by a regular relational database. Previously I found Manifold and ms-access were a good combination ...
3
votes
0answers
301 views

GIS applications and noSQL solutions

I'm a bit lost about NoSQL and applications using GIS. My aim, to sum it up quickly, is to store geospatial object into a MongoDB database and display them into a map via OpenLayers. Is it possible ...
3
votes
0answers
116 views

Can GDAL Perform Vertical Transformations?

Can GDAL perform vertical transformations? If the answer is yes, please indicate which amongst these listed pages can explain how exactly to accomplish vertical transformations? If there is some ...
3
votes
0answers
38 views

How to determine irrigable acres from a single source/point?

I am trying to graphically depict the exact amount of irrigable acres from a single point, in this case a headgate from a drainage ditch. Basically, I have the original water right decrees (i.e. ...
3
votes
0answers
74 views

Is Dynamic Traffic Format supported by QGIS?

I have to merge (Dynamic Traffic FORMAT) DTF file into QGIS. This data is only available from NAVTEQ or TOM TOM. When I have searched ArcGIS network analysis tool, there is a clear option for adding a ...
3
votes
0answers
208 views

How to convert WKT to SVG

I have some Well-known text (WKT) for representing geometry object such as Point, MultiPoint, LineString, Polygon, MultiPolygon etc. I have a multipolygon with in total 40000 Points. I have found ...
3
votes
0answers
100 views

How to repair Geometric Network in Versioned ArcSDE Geodatabase?

Our Versioned ArcSDE workflow has a feature dataset with Geometric Network in the parent (Default), which users derive in their own versions. It is now observed that in some versions, the geometric ...
3
votes
0answers
107 views

ArcGIS JSAPI - web workers CORS issue

In my JS web-application, I'm trying to store the tiles in my localstorage using web workers.I'm using the code from this Esri sample. I just deleted line 20 in the ioWorker.js file: url = ...
3
votes
0answers
590 views

Uploading Service Definition Failed

Can anyone give me direction as to possible reasons why when publishing certain map services I get the "Packaging Succeeded but Publishing Failed" error? When I expand the Geoprocessing Results ...
3
votes
0answers
282 views

Is Tomcat or Jetty a better container for Geoserver on Windows

My Understanding is that Geoserver can be run in the default Jetty Environment or in Tomcat on Windows Server 2008 R2 GeoWebCache uses Tomcat as its container in its installation instructions. Which ...
3
votes
0answers
131 views

Cross-browser marker animation in OpenLayers

Currently I'm trying to implement animated markers in OpenLayers. I'm using PNGs for the markers, set by the externalGraphic style property on an OpenLayers.Layer.Vector. I need to be able to make ...
3
votes
0answers
66 views

Is it possible to access individual pages within an existing pdf using arcpy.mapping?

I've used the arcpy.mapping module for some time now to create mapbooks and other pdf documents, using a combination of Data Driven Pages and Python. I would like to take an existing pdf and save each ...
3
votes
0answers
372 views

Using Custom Map Projection On Leaflet

I have an application displaying a EPSG:3414 map running on Openlayers - jsfiddle working sample that works. I am trying to implement the same on Leaflet - jsfiddle non-working, it is not working as ...
3
votes
0answers
76 views

How to express not within/inside predicate in spatial database with good performance

In our application we want to express some spatial predicates as objects not within some areas, but unfortunately it has very bad performance. The following SQL is generated by our application: ...
3
votes
0answers
192 views

Finding poi using st_dwithin in postgis

I am not familiar with gis or writing sql, so my understanding in this field is lacking. I have a hundreds of lat/lng geographic coordinates stored in a single table called Places like this: ID | ...
3
votes
0answers
120 views

How to create a Typographic Map with Mapnik

So i am trying to make a typographic map using mapnik. I want the street names along a particular street not to overlap, but I want an intersection between two streets to over lap. Currently some ...
3
votes
0answers
149 views

QGIS does not read ESRI Geodatabase correctly

I have a geodatabase from the EPA that does not seem to me reading correctly with Quantum GIS. When I open the attribute table the first two columns have the same data. The first column is CERCLA_ID ...
3
votes
0answers
160 views

Create a path following a road, interpolating from a set of points

I have several hundred vehicular routes within a city from which I wish to create shapefiles. These take the form of directions such as "From Green Street, turn left into Brown Street, Right into ...
3
votes
0answers
138 views

Tabulate Area ArcGIS

I am trying to work out the relationship between the 'processing cell size' and the result from Tabulate Areas. If one uses the same as the raster cell size, and this is the same for both rasters, the ...
3
votes
0answers
251 views

How to calculate the distance to multiple locations from each cell of my raster?

I'm working with Arcgis 10.1 and Python 2.7.2 How can I calculate the distance to multiple locations from each cell of my raster? I tried euclidean distance but it only provides the distance to ...
3
votes
0answers
85 views

Reshaping polygons while preserving area

I'm looking to manually skew the shapes of areal polygons, but need to ensure their areas are not altered. Is anyone aware of any GIS tools or programming workflows that exist for manually reshaping ...
3
votes
0answers
114 views

Agent Analyst extension for ArcGIS

I am trying to create agent based model for simulating movement of occupants in different rooms of different floors of a building. I am using Agent Analyst tutorial downloaded from ESRI website and ...
3
votes
0answers
66 views

ArcGIS 10.0 Network Analyst Creating Service Areas Beyond My Network

I am experiencing weird off shoots which are beyond my network when creating service areas using Network Analyst. The red circle in the picture below shows an example. I am currently using ArcGIS ...
3
votes
0answers
638 views

How to rotate and move polygons to different angles using ModelBuilder (or ArcPy)?

I have a few thousand polygons (all square) that I need to rotate to various angles that are in the attribute table, and then move so that each polygon gets moved 3/4 up from the original centroid, ...
3
votes
0answers
95 views

Is GeoExt styler extension available for Geoserver 2.3.3?

I've switched from my older version of geoserver to geoserver 2.3.3. In the older version, the styler worked just fine, but I could'nt find a styler extension that matched the new version. I tried ...
3
votes
0answers
60 views

what criteria should I consider in buying a pocket GPS

It's my first time making this kind of choices, and I really don't know how to go with a choice or another. I basically know that it should have good durability , a good battery life and good ...
3
votes
0answers
194 views

Find points that fall within a radius using Hibernate Spatial

I am using hibernate spatial and postgis and i want to find the points that fall within a certain radius. Using this SQL: SELECT name FROM institution WHERE ...
3
votes
0answers
189 views

Is there a Python WMS client (thin client analogue of OpenLayers)?

I'm making a geoportal based on (Geo)Django 1.5, PostgreSQL 9.1 + PostGIS 2.0, QGIS MapServer and OpenStreet Map or Google Maps WMS services for the base layer. It seems like there is no problem, but ...
3
votes
0answers
120 views

ArcGIS Javascript API - Looking For Styled Navigation Plugin/Widget

I am looking for a fancy navigation plugin to use with the ArcGIS Javascript API. Something along the lines of the Navigation Widget (see image below) available in the Flex Viewer would be great. ...
3
votes
0answers
97 views

Can extracting raster values work in polygons' CRS without raster resampling?

I am trying to extract raster values using polygon layer with different CRS. Raster is in WGS84 (EPSG:4326) and the polygons in UTM (EPSG:23031). 1. If I want to work in the projection of the ...
3
votes
0answers
68 views

Quantifying polyline overlap

I have a set of regions and would like to quantify the degree to which the boundary of these regions are situated on/near rivers. I have turned the regions from polygons to polylines in arcgis 10.1 ...
3
votes
0answers
70 views

Is there a way to Collect Lat-Long in a Google Docs Form?

I'm helping out a small non profit. They are collecting some simple data using a Google Docs Form. The need to collect exact latlong (upto 5 meters accuracy is fine). Ideally the end user would ...
3
votes
0answers
150 views

Is co kriging appropriate for interpolation of three spatial co variates?

I want to estimate an interpolation model(s) for daily minimum temperature, daily maximum temperature and daily rainfall. I have samples of approximately the same size for all three variables at ...
3
votes
0answers
56 views

Is there a way to label a layer using its file name or layer name?

Is there a way to label a layer using its file name or layer name (if I'd change it in Layers window TOC)? I tried some functions but I'm not good on that. I have lots of shapes (lines) and it would ...
3
votes
0answers
228 views

Configure Python with Geoserver

I am developing a WebGIS application with: Openlayers 2.12 PostgreSQL 9.2 with PostGIS 2.0 extension Geoserver 2.2.3 Apache 2.0 configured with Tomcat 7.0.35 PROBLEM One of the services of the ...
3
votes
0answers
241 views

Novel ways of filling in missing values in a raster

I am looking for robust ways to fill in missing values in some rasters. They all have a single layer. Missing values consist of single pixels to medium sized patches. Rasters are around 1000 x 1000 ...
3
votes
0answers
153 views

Where can I get free nautical route planner Data?

Please read - and understand - before closing; I do not yet have an answer. Thanks. I made a mistake. I phrased my original question so that it could be answered by recommending an application. It ...
3
votes
0answers
142 views

Constructing a Voronoi diagram using a complicated travel time metric

I have in my possession four sets of shapefiles: 1. Locations (points), around 1000 2. Roads (lines), each road has a speed attribute 3. Terrain (polygons), each zone also has a speed attribute 4. ...
3
votes
0answers
138 views

Multiple text formats in a qgis label

Is there any way to have multiple text formats in a single qgis label? I am making a map that shows mountain summits. Many of these summits have more than one name and I would like to show each name ...
3
votes
0answers
144 views

OpenLayers and external CSS

I am using geoExt and OpenLayers to plot some map. Everything worked well until I had to add some styling. To display it on the webpage, I need to use the CSS of my university and once I do that, I ...
3
votes
0answers
91 views

Unknown gridlines on old Greenland base map!

Can anyone help me out please? I'm using an old 1:10,000 base map of Greenland for a mapping project with nice 10cm gridlines already drawn on. However it uses a coordinate system which is unfamiliar ...
3
votes
0answers
155 views

How to create a line layer which connects a point layer to a line layer?

In the map shown below, I have manually created the dummy lines (in green). Using python, and without using PostGIS or sextante, I would like to automate the creation of these dummy links between a ...
3
votes
0answers
94 views

Why are my raster mean and standard deviation -1?

I have a set of about 25 rasters whose descriptive statistics I have been examining. The data in the rasters were calculated in Python and the rasters were created using Python-GDAL. In all but one ...

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