A component that transparently stores data so that future requests for that data can be served faster

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2
votes
1answer
212 views

What is cache size measured in?

Can anyone tell me what the units are for the Cache Size setting in QGIS please? Is it bytes, KB, Mb, MB? When I look in the directory specified by the path (/Users/.../.qgis/cache/) the cache ...
2
votes
1answer
324 views

Is it necessary to use cachewrite control to use cacheread in openlayers?

the question is very simple. i want to use the OpenLayers.Control.CacheRead control to load and store tiles when the connection is fast e.g. with wifi network. then use the same device in other places ...
3
votes
0answers
187 views

Can you set a QGIS print composer to render the map as default?

I have set up a number of templates for the print composer in QGIS. In the Print Composer, there is the option to have the map image displayed in 3 ways: as a blank rectangle with no updates until ...
1
vote
1answer
416 views

How do i use gdal2tiles for creating tilecache?

I want to create tiled cache from raster file, so i downloaded gdal2tiles.py. Now i don't get what (and how) i must do with that python script file.
3
votes
1answer
477 views

ArcGIS Server cache from outside wms service

I have an arcgis server web application (version 10.0) that utilizes an external wms service for displaying some information layers on top of a local basemap. This external service has a tendency to ...
1
vote
2answers
137 views

Is it possible to cache the same WMS service based on a vendor parameter?

I'm exploring optimization techniques for caching data coming back from a Digital Globe service. We have two unique identifiers we use for their WMS GetMap service that will give us low or hi-res ...
1
vote
0answers
45 views

Feature class field count caching issue

In our application, we exposed a custom file format to ArcScene through a custom plugin data-source. However, we experience some problems which we ascribe to caching issues. We generate a dataset ...
7
votes
2answers
842 views

How Can I Make QGIS Stop Blinking Every Time I Pan?

The way QGIS draws the canvas when panning is quite annoying. If I pan the map even a little bit everything goes blank for a second or two before the layers are drawn. It looks like this happens only ...
1
vote
1answer
93 views

caching part of a postgis layer in mapserver

I'm creating a layer in mapserver using postgis. The layer consists of many polygons. Sometimes some of those polygons will change. Is it possible to cache the layer tiles using something like ...
5
votes
1answer
178 views

Why Can't ArcPy Search the Newly Created Feature

I'm running the following tool in ArcGIS 10. I have an ArcPy Script like this: import arcpy from arcpy import env env.workspace=r"C:/sde/lcimrl.sde" fc="SDE.ATTACHMENTS\SDE.attachment_points" fcRows ...
4
votes
4answers
616 views

Caching / Preloading data for use with WMS queries

Hoping someone can help me with this issue. I've got a map implemented in my web application using OpenLayers that makes WMS queries to GeoServer that in turn queries a Postgres (PostGIS) database to ...
0
votes
1answer
661 views

What do I need in order to show offline map (tile cached based) of area from OSM using Openlayers?

I want to make an offline map with certain zoom levels of an area from OSM (preferably keeping the styles of OSM). Client will use OpenLayers , If needed I can install Geoserver/Mapserver and MS-SQL ...
2
votes
1answer
325 views

Warning: QNetworkDiskCache::prepare() unable to open temporary file

When I run qgis 1.8.0 on Linux and load a WMS layer from a remote server I get messages (in terminal) saying Warning: QNetworkDiskCache::prepare() unable to open temporary file Downloading tiles ...
12
votes
1answer
1k views

How to increase the display performance of Bing basemaps in ArcMap?

I'd like to know if there are ways (within ArcGIS itself) to increase the display performance of basemaps within ArcMap. The internet connection was recently upgraded, so it is much faster than ...
5
votes
1answer
232 views

How to cache PostGIS views?

Does anyone knows if there exists a caching system for views or queries in postgis? I have a system that gives information through a webpage using a postgis view as backend. The problem is that, ...
4
votes
2answers
490 views

Unable to stop ArcGIS Server automatic cache generation

I'm running ArcGIS Server 10.1 on a Windows box on Amazon, via remote desktop. I've set up some services on which I have enabled caching using the Bing/Google/Esri scheme. I explicitly set these to ...
3
votes
3answers
3k views

local tiles server for offline access

Anyone knows if there is a "lightway" solution to mount a local tile server? Feature I'd to provide is local storage of small sections of maps, not more than small city for example, in order to ...
1
vote
2answers
759 views

Caching for dynamic layers

I have over 140 layers that need to appear as overlays on basemaps(Google and OSM). My users can pick and choose which layers they want to see and store them in their preferences. While we have built ...
1
vote
1answer
1k views

Can't add map service (map cache) to mxd

When trying to add a map service (in this case a map cache service) to an ArcMap project, I keep getting an error that says: Could not add specified data object to the map. Could not connect to the ...
3
votes
1answer
362 views

How to use an ArcGIS Server cache directory with multiple (differently named) map services?

We have a map service named 'X' that created and uses tiles in a cache directory 'Folder_X'. I'd like to create a second map service named 'Y' that uses the same cache directory - that is, it serves ...
4
votes
1answer
310 views

How to control visibility of cached layer in ArcGIS Server map service?

I am consuming mapservice form ArcGIS Server 10 using ArcGIS Silverlight API. I have created cache (fusion layers) for my services by right clicking on the mapservice in ArcCatalog and clicking create ...
3
votes
0answers
74 views

Partially cached maps

Have anyone tried to set up a tilecache for a certain area of a map, leaving the areas outside of the tiles boundingbox to pure wms calls? Background is I have a map where about 10% of it is accessed ...
1
vote
0answers
106 views

Clear or Disable Cache in ArcObjects Globe Control

Is it possible to clear or disable the cache for individual layers on the AxGlobeControl? If so, how? I would like to be able to do this programatically through ArcObjects.
1
vote
0answers
216 views

Dynamic Tiling Isn't working(create tiles on demand isn't working)

I have a map where users are going to primarily being viewing a particular area, so I cached this area and checked off the dynamic tiling option inside of the service properties this worked fine for a ...
5
votes
1answer
230 views

Creating a bounding box to pull from cache

I have a simple python script that is pulling in lat,longs from company's db and we are trying to create several bounding boxes around these points to simulate zoom-levels. The script will pull tiles ...
2
votes
1answer
360 views

Creating a map cache without ArcServer?

Is there a way to create a tiled map cache without using ArcServer? I have aerial photography in .sid format that takes a while to load, whereas cached jpeg tiles will load much much faster. Any way I ...
4
votes
3answers
582 views

WFS Caching / Back button

I'm using WFS protocol on Vector layer / GeoServer / PostGIS Currently the map is refreshing and calling new requests whenever i do anything like searching or drawing and when i move back to a part ...
5
votes
1answer
1k views

'invalid url' on ArcGIS server REST API

From time to time, the services on our ArcGIS server will not be available, and when requesting tiles, I will get a 'invalid url'. This is okay, sometimes it is scheduled downtime, maintenance or just ...
6
votes
3answers
3k views

need to clear cache memory using python

I have looked at several posts here and on other sites but have not found a solution to the problem I am having with this python script. In this script I use 2 nested 'for' loops to extract a series ...
2
votes
2answers
1k views

How to cache online tiles on a development machine?

I am developing a slippy map web application using openlayers. Right now my tiles come straight away from OSM and google, etc. For the moment I always work on the same area for development purposes ...
5
votes
1answer
2k views

How to serve local maps for an offline HTML5 webmapping app?

How could one serve maps (tiles in wherever format possible) within a Android device to be consumed by an offline webmapping app also accessed within the device's browser?
3
votes
1answer
753 views

How to increase performance of tile caches if vendor parameter filters are needed?

My application uses vendor parameters to filter the data. It takes some time to generate all tiles on the server. Therefor I'm trying to increase the performance of the application. I'm using ...
6
votes
1answer
510 views

Clearing map cache - ArcGIS Engine

Is there a programmatic way to clear the cache of a map in ArcGIS Engine 10.0? It is apparent that there is some caching scheme operating under the covers, and I'd like to clear all of its cached ...
2
votes
1answer
206 views

Why is my DEM not caching correctly?

Relating to a previous post, found an excellent source for data called Koordinates. I downloaded this 5m DEM of New Zealand, Wellington. This is in a TIFF format and I have added to ArcMap 10, ...
5
votes
4answers
3k views

Creating Local Cache From ArcGIS Online Basemaps

I am contemplating creating a local caches from the standard ArcGIS Online Basemaps; streetmap, imagery and topo. I need to do this because the environment the web application will be hosted is DOES ...