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When using Delft-FEWS the configuration can be present as files on the file system or can be contained in a local data store. The svg files that are used for the scada display work in both cases. However, if the svg files refer to separate image files, then the scada display can only display these images if the image files are present as files on the file system. If these separate image files are contained in a local data store, then they cannot be displayed in the scada display. Therefore, when using separate image files, make sure that the configuration is present as files on the file system. If this is not possible, then the best workaround is to not use separate image files. For a schematic image it is possible to create svg elements that resemble the contents of the image. If these svg elements are added to the svg file for the scada display, then there is no need to use the image file anymore.
Tips And Tricks
Embedding image files into SVG files
It is possible to embed images file into an SVG file. If an image file is embedded into an SVG file, then the original image file is no longer needed, because the image data is then available from the SVG file itself. To embed an image file into an SVG file using Inkscape, do the following. Open the SVG file in Inkscape. Add one or more images to the file in the normal way. Then select menu "Extensions", then select "Images", then select "Embed Images". Then click "Apply". Then save the SVG file in the normal way. Now the images are embedded into the SVG file. If all the images in an SVG file are embedded, then Delft-FEWS only needs the SVG file itself (and not the original image files) for displaying in the scada display.
Controlling the resizing behaviour of an svg document within the scada display
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