:: General Questions ::

:: Questions about Stereowebmap requirements ::

:: Problems with starting StereoWebMap ::

:: Problems during the running of StereoWebMap ::

General Questions

» What is StereoWebMap?

StereoWebMap is a client WMS, which allows us to navigate and interact with maps obtained from a WMS server. StereoWebMap is capable of working with plane images as well as stereoscopic images.

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» How can StereoWebMap present imáges in 3D dimension ?

StereoWebMap uses 2 techniques of stereoscopics. To show images in 3D with the more basic systems, they generate anaglyphic to show the image. These have to be viewed with special glasses which contain colour filters. With more advanced systems, where stereoscopic imaging is available, one is able to use LCD glasses.

StereoWebMap in its anaglyphic version, shows images in 3D through the use of anaglyphics. On the other hand, the real stereo version is able to show the images through the use of stereoscopics, depending on the system requirements.

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» What technology does StereoWebMap use?

StereoWebMap has been completely developed in Java, which means it can be used on any computer which contains the application.

StereoWebMap uses Java web start as a technology display, simplifying to the maximum the process of installing and running. This means, the user has no problems with the set up or dependence on any other technologies.

StereoWebMap uses the standard OpenGls WMS to obtain images from the map servers.

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Questions about Stereowebmap requirements

» My computer doesn’t have a 256 MB RAM memory, can I still use StereoWebMap?

StereoWebMaprequires a significant quantity of free RAM memory, in order to work efficiently. It is possible to run Stereowebmap on PC’s with less memory, yet at a risk of lower performance. In this case we recommend the use of the anaglyphic version which requires less memory and so a better level of performance can be obtained. You can also use a real stereo version of 800 x 600, although the last version suffered a loss in performance.

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» I don’t know if my computer’s graphics card is compatible with OpenGL 1.3, can I use StereoWebMap?

In this case to run StereoWebMap, we recommend to update the graphic card controls to the latest version, in the case of not having access to control updates, we recommend the anaglyphic version.

The most common controls of graphics cards can be downloaded from the following links:

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» My computer doesn’t have a compatible graphics card openGL1.3. Can I use StereoWebMap?

StereoWebMap in its anaglyphic version doesn’t require OpenGL1.3; however it does require it with the real stereo version. Depending on the model of the card and version of controllit’s it’s possible that it can function with a graphic card of OpenGL 1.2, but its correct performance can’t be guaranteed.

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» My computer has a compatible graphics card with openGL1.3, yet StereoWebMap is not working properly? What could be the problem?

The most probable is that you are using a real stereo version and a graphic card controller which is obsolete. In this case we recommend the use of an anaglyphic version. But in the case you wish to use a real stereo version, it’s recommended you download the latest version of graphics cards.

The most common controls of graphics cards can be downloaded from the following links:

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» How can I find out which version of Java my computer needs?

You should be able to check the Java your computer has by searching "java-version" from your systems control panel.

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» I don’t have Java 1.5 or a newer version of Java. How can I install it?

You can download and install Java from the following link:

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Problems with starting StereoWebMap

» Why doesn’t the application load when I click on the link?

This could be due to two reasons. Firstly Java isn’t installed on your computer, or secondly the plug in Java Web start is not configured for the navigator your computer is using.

In the case that Java is not installed, you can download and install Java from the following link:

In the case that the plug in is not configured, consult your systems user guide.

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» Why does StereoWebMap close automatically before downloading?

It is probably due to the fact that it is running the real stereo version, in this case StereoWebMap requires that the controller of the graphics card is compatible with the OpenGL 1.3, if this is not done, StereoWebMap closes automatically before finishing downloading.

You can download the most common controllers of graphic cards from the following links:

If the problem persists, even after the set up of the controllers, it could be due to an incompatibility between the Java Web Start and the controller of the graphics card. In this case, you can try to download and install the distribution package of stereowebmap, through the following link:

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» StereoWebMap is uploaded, but not obtaining the images from the server. What could be happening?

It is probably due to some form of firewall blocking the connection between StereoWebMap and the map servers. Configure your firewalls on your computer, or consult your internet administrator.

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Problems during the running of StereoWebMap

»The images take long to download. How can I speed up the download?

The images being used on StereoWebMap are of high quality and have a size which depends on the resolution being used. Use the version 800 x 600 pixels to download the images faster.

It is also recommended to stop any other running applications before launching StereoWebMap.

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» The tools and cursor are working slowly, how can I improve their performance?

Its is recommended to stop all running applications which consume a large quantity of CPU time and system memory before starting up StereoWebMap, which requires a lot of CPU especially during the running of stereoscopic imaging.

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» Why is the screen not shown properly in 3D mode?

It is probably due to the fact that it is running the real stereo version, in this case StereoWebMap requires that the controller of the graphics card is compatible with the OpenGL 1.3, if this is not done, StereoWebMap closes automatically before finishing downloading.

You can download the most common controllers of graphic cards from the following links:

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» When in 3D mode, the tools on the map don’t seem to work. How can I move within the map?

In the stereoscopic version, you are not able to use the dragging tools. In order to move the image, you have to select a certain area on the map by clicking on the mini view or using arrows that are around the image.

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StereoWebMap is a product of Sigrid S.L. and Acotel S.A. © 2007

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