Re: [OpenMap Users] Is CsvTiledImagePlugIn so demanding on memory ?

From: Don Dietrick <>
Date: Mon, 29 Aug 2005 07:04:34 -0400

Hi Guys,

The CSVTiledImagePlugIn doesn't do any management with respect to
only loading the images that are needed. It loads all of the images
in the csv file at runtime and holds on to them.

What are the pixel sizes of the images, what are their coverage
areas, and what is the scale of the map when are you looking at them
(what is the resulting image size being displayed)? When taking
those numbers into account, do they seem to make sense with the 420Mb?

- Don

On Aug 29, 2005, at 4:40 AM, mirek pawlowski wrote:

> Hi,
> I load a map layer using a CsvTiledImagePlugIn. The Csv file
> contains 27 descriptions of map data.
> All 27 files are in PNG format and their size rather small from 30
> to 70 kB. The sum of their size is about 1MB.
> My application without that layer occupies about 30MB but after
> loading that layer that value increases up to 650MB .
> After about 2 minutes that value decreases to 420MB.
> That CsvTiledImagePlugIn works properly and all data from Csv file
> are on the map :) but that memory consumption is horrible :( .
> I'm realy surprised !!!
> Is it correct that CsvTiledImagePlugIn is so demanding on memory ?
> Any advice would be appreciated.
> Regards
> Mirek Pawlowski

Don Dietrick,
BBN Technologies, Cambridge, MA

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Received on Mon Aug 29 2005 - 07:06:25 EDT

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