An extension fro aligning multiple images, by palcing markers over the same features. The extension has two features, drawing the markers, and aligning the images. First the markers are drawn, 3 for the "target" (top blue ones) -- theese indicate where the choosen features will end up -- and 3 for each image to be aligned -- theese indicate the same feature on all images. After the markers are positioned the ID for each image has to be set (Object -> Object properties) to name given in the ID field, and a number indicating wich set of markers are used for that image (if the id field is set to "qwert" then the image with the green markers has to have the id "qwert1", the one with the red ones "qwert2" and so on). If everything is set up, choose align objects from the dropdown maneu and click ok.
Color Palette Great Data/Chart/Diagram Visualization, for more resources (palette, template, symbol) please visit my open-source repository: https://github.com/metasong/SvgLib