The process of generating an image from a model.

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1
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2answers
412 views

Need help getting started with QgsComposition

I am using QgsComposition for the first time, but I fail at the first step :-( mapRenderer = iface.mapCanvas().mapRenderer() line 31, in mapRenderer = iface.mapCanvas().mapRenderer() ...
2
votes
2answers
404 views

QGIS Newbie Rendering Time

I am new to QGIS and have just installed 1.8.0 on a Gateway laptop that is about 2 years old. It is running Windows 7, has an Intel Core i3 2.13 GHz processor, 4 GB of RAM. I've just brought in my ...
2
votes
2answers
430 views

What is the compression gained by caching mod_tile's metatile instead png tiles?

What is the level of compression gained caching mod_tile's larger metatile instead of 256 by 256 .png tiles? I am trying to determine the extra cost of storage resources for pre-rendering some set of ...
3
votes
1answer
2k views

How to filter features in a layer?

I am trying to display certain features in a shapefile-based layer using QGIS. I have found the subset function in the properties panel, which does exactly what i want, but is too tedious given that I ...
2
votes
0answers
168 views

Rerendering OpenLayers in JSF2

did anyone try rerendering OpenLayers in JSF2? I am using a4j:ajax events, I mark the render atribute with render="map" where map is naturally the id of the openlayers div tag, and I use ...
6
votes
1answer
1k views

How to Optimize Openstreetmap Tile Rendering?

I am currently trying to render Water (3,198,333 records) and detailed world borders (processed_p) for the world. I am successful in rendering both layers, but I am not happy with performance. My ...
1
vote
0answers
180 views

How Do I Capture when the Cluster Rendering is Completed

I have a graphics layer that draws clusters using the sample custom cluster from ESRI. http://help.arcgis.com/en/webapi/silverlight/samples/start.htm#CustomClusterer We have a Busy Indicator that we ...
4
votes
1answer
185 views

Is it be possible to re-render parts of a tile pyramid when postgis table updates?

I have this idea of using postgis together with a tile renderer for serving my organization with tiled maps. As I believe my data will be partially altered almost on a daily basis it does feel like a ...
2
votes
0answers
507 views

Implementing custom IRenderer for ArcGis 10.0/WPF

EDIT: Updates in the bottom As a followup to my earlier question, I'm trying to implement custom symbol rendering for my WPF/ArcGIS application. I'm accessing layers that have been published on the ...
5
votes
1answer
1k views

Render the PostGIS OSM data in 3d?

I wonder is there any open-source application that can query a PostGIS-enabled database and render the resulting OSM map in 3d. The only thing I have found so far is Navit, but it renders only from ...
19
votes
3answers
4k views

Optimal video cards for GIS programs

I recently purchased a Dell XPS-8300 (i7-2600|16 GB DDR3 RAM|64-bit Windows7) which I intend to use primarily for GIS programs. I bought a refurbished model because it was much cheaper and because I ...
13
votes
3answers
4k views

Is there a way to render lines with a smooth (bezier) curves in QGIS?

I am moving from creating maps with Illustrator to making them with QGIS and actual data. One of the things I haven't been able to re-create in QGIS are the smooth curved lines I can get in ...
3
votes
1answer
785 views

OpenLayers polygon fill on IE has black shading

I have an odd problem on with OpenLayers on IE6, IE7 and IE8. A newly drawn polygon has odd black shading. In fact, even the line (stroke) has the same black outline. Works great in Firefox, ...
2
votes
4answers
649 views

MapServer rendering at the lowest zoom levels

I am developing a web mapping application based on OpenLayers and using a WMS layer from MapServer (the source data for this layer is stored in PostGIS database) and I am facing the following problem: ...
3
votes
2answers
5k views

How can I display this polygon in Google Maps, properly

NOTE: this question is sorta like a follow-on question to this original GIS Question I asked. In that question, the main suggestion was that I was trying to show two polys. Now, I'm asking about a ...
1
vote
2answers
691 views

Can you reorder a classified vector layer in QGis?

I have a GML file that I'm displaying in QGis - it contains a set of contours and they are written out in such a way that the lowest contour (largest polygon) is drawn last thus covering up all the ...
3
votes
0answers
263 views

IUniqueValueRenderer on Polyline and Points made my Features all invisible

I am currently using IUnique value renderer like this: foreach (string nodeType in nodes) yield return new KeyValuePair<string, ISymbol>(nodeType, CreateNewSymbol() ); public static ...
7
votes
2answers
1k views

Can Mapnik render spatial data from SQL Server?

This is a very simple question - I just want to know if anybody can confirm that they have successfully used Mapnik to render tiles directly from data held in SQL Server. (And, if so, what did you do ...
8
votes
4answers
1k views

Fastest spatial storage format?

I am wondering what storage method will result in the fastest reading of the map vectors for rendering. SHP? PostGres? SQLite? (They do not change often and I do not need spatial functions for these ...
7
votes
3answers
343 views

How to handle display of nested polygons (census, county/state, etc) for a given map extent

My question is how best to decide which layer (from a set of nested, aggregated census polygons) to display for any given map extent in an online map. Australia's census boundaries are built from ...
6
votes
3answers
1k views

Obtaining *rendered* OSM data

I'd like to produce a simple walking map with some points of interest. Ideally, I'd like to use the rendered OSM data, as you can get from the page. Using the QGIS OSM plugin, I can only download a ...
1
vote
1answer
895 views

GeoTools Dynamic Layer

I need to change the features of a MapLayer in real-time but I don't know how I can update/refresh/repaint the layer on the map without having to remove it and add it again (which creates flickering). ...
2
votes
3answers
704 views

MapServer - map rendered at the wrong angle

I've just started using MapServer to check the topology in my database, and whenever I render a map I have to flip the image vertically and then rotate it quite a bit to get it facing North. I've set ...
7
votes
2answers
589 views

Maps, black and white/ gray scale printing

I'm working on Mapserver to do beautiful maps with AGG rendering Until now, I've only thought about the best way to get color maps. Now, I have to think how to make color ones compatible with a grey ...
8
votes
2answers
590 views

How do I rotate the OSM map before printing?

What is the simplest way to rotate and render Openstreetmap data, and still get a nice render? For example Toronto, would fit best rotated slightly on a page in landscape mode, so the northern ...
4
votes
7answers
948 views

Any Good Map Rendering Engines for SqlGeometry/SqlGeography

Can anyone suggest good map rendering engines for MS SQL Server Spatial types (SqlGeometry/SqlGeography)? By rendering, I mean plot the geometries to a common image format such as png or jpeg with ...
5
votes
1answer
390 views

Why does the 3D Analyst 2D export renderer create anomalies?

A lot have been improved in the 3D Analyst 10 including the ability to export large scenes as large 2D images. However, some problems still exist one of which is: When I export a scene that contains a ...
26
votes
10answers
11k views

How would I draw and visualize custom maps based on OSM data?

I would like to be able to use openstreetmap data for a specific region as a source and "draw" from that the map of infrastructure improvements - mostly roads. I want it to be self-hosted (not ...