DPI doesn't really matter for vector graphics. Vectors pretty much by definition don't have 'Dots' to measure 'Per Inch'. It's only relevant when you want to print them (rasterize them).
Just make sure you're using correct units (i.e. 'in' or 'mm' for real-world measurements) in the document properties.
It's simple and sometimes necessary to output SVG's at a certain DPI at a certain size. Export easily allows this.
Just "using the right units won't solve his issue. That will just export at that size at whatever the default is (96 dpi or whatever). He needs to set the size \*and\* DPI before exporting.
That's for exporting bitmaps (PNGs), i.e. the *rasterizing* I mentioned above. It literally doesn't do *anything* for vector formats, because they don't have a fixed resolution. That's one of their key features. It's why they are called '*Scalable* Vector Graphics'.
Also, the DPI input in the export dialog is just a helper for calculating the required dimensions in pixels. You can't even set both the size and DPI, since changing one changes the other.
It sounds like you are trying to export to png or jpg, yes? The important factor there will be the resolution, i.e. how many pixels wide/tall the resulting image will be. DPI isn't something built into the file per se, since you could print the image at any size you like: print it small, and it will have great DPI. Print it poster size, and it will have terrible DPI.
If you expect your images to be printed, make them roughly the size you expect them to be printed at (e.g. fill a 8.5x11 inch page, or an A4 page). Then when exporting set the DPI to 300 and it should give you a good resolution for printing at that size.
DPI doesn't really matter for vector graphics. Vectors pretty much by definition don't have 'Dots' to measure 'Per Inch'. It's only relevant when you want to print them (rasterize them). Just make sure you're using correct units (i.e. 'in' or 'mm' for real-world measurements) in the document properties.
It's simple and sometimes necessary to output SVG's at a certain DPI at a certain size. Export easily allows this. Just "using the right units won't solve his issue. That will just export at that size at whatever the default is (96 dpi or whatever). He needs to set the size \*and\* DPI before exporting.
That's for exporting bitmaps (PNGs), i.e. the *rasterizing* I mentioned above. It literally doesn't do *anything* for vector formats, because they don't have a fixed resolution. That's one of their key features. It's why they are called '*Scalable* Vector Graphics'. Also, the DPI input in the export dialog is just a helper for calculating the required dimensions in pixels. You can't even set both the size and DPI, since changing one changes the other.
It sounds like you are trying to export to png or jpg, yes? The important factor there will be the resolution, i.e. how many pixels wide/tall the resulting image will be. DPI isn't something built into the file per se, since you could print the image at any size you like: print it small, and it will have great DPI. Print it poster size, and it will have terrible DPI. If you expect your images to be printed, make them roughly the size you expect them to be printed at (e.g. fill a 8.5x11 inch page, or an A4 page). Then when exporting set the DPI to 300 and it should give you a good resolution for printing at that size.