Chris, Garth, others, Now that we've resolved the issue of reentering Qgis and accessing my previously saved project data (thanks again, Garth!), I can go on to investigate whether Qgis can serve as my entire graphics toolkit for working on and producing the final output version of maps. I certainly wouldn't mind that being the case (even though powerful vector-graphics tools such as CorelDraw also have their place, I maintain).
*Shapefiles* But, it should also be possible to use Qgis to (say) input GIS data files in one format (such as NASA's SRTM “tiles”), then output the data in another vector-graphics format (such as .shp shapefiles or .svg files) – for directing the data to another application for further processing, as convenient – whether or not Qgis technically can do much the same further processing. In this regard, I generated shapefiles corresponding to the input SRTM data, but I encountered 2 problems there: First, my preferred secondary application CorelDraw does not accept .shp (and associated files) input – though it does read .svg and .pdf files. Second, to get past this initial limitation, I attempted to input Qgis' output shapefiles to the website Aspose's page for converting shapefiles into svg files only to have it declare allQgis' shapefiles to be “invalid data.” I have a trouble report in with them about that. I would prefer to use shapefiles to transfer the data – that is intended to be an interim format – however CorelDraw doesn't accept shapefiles (.shp) , but it does svg On Wed, Sep 13, 2023 at 12:18 PM chris hermansen <clherman...@gmail.com> wrote: > Michael and list. > > On Wed, Sep 13, 2023 at 10:22 AM Michael Edward McNeil < > memcnei...@gmail.com> wrote: > >> Chris, I could experiment with QGIS's cartography capabilities more if I >> could save my project, exit, and then resume working on it later. My other >> problem with QGIS interferes with that potential procedure. >> > > Perhaps there is a degree of misunderstanding here. > > When you work with say Microsoft Word to eventually produce a document > that you will export to PDF to send to others, you don't save your interim > work in PDF; you save it in Word's internal format, .docx. > > Similarly with QGIS, you save an ongoing piece of work as a project. Look > at the Project menu item, where you will see the ability to Save or Save > As. When you're ready to export your work to PDF or some other output > format, there is an "export work flow". > > There is also an important QGIS component not immediately visible, which > is the Print Layout, also available in the Project menu item. > > You might wish to follow through the online documentation here > https://docs.qgis.org/3.28/en/docs/training_manual/map_composer/map_composer.html > to see how that component is used to make a map, with surround, annotation, > etc ready for export to PDF as a finished product. > > So the overall workflow is to assemble the various layers you wish to > depict on the main QGIS screen, applying symbology to each layer; then open > a print layout to wrap up what's on screen into a full map composition. > > >> Yes, aligning a single layer in another app with its true position is a >> problem. If I continue trying to do it this way, I'd probably also output >> meridians and possibly other clues (e.g., the British coastline) to allow >> aligning it properly. >> > > Don't forget that you can add useful raster layers, like Open Street Map, > to your screen and map composition, to save yourself a lot of time with > respect to tracking down vector or raster data sets, symbolizing them, and > so forth. > > > -- > Chris Hermansen · clhermansen "at" gmail "dot" com > > C'est ma façon de parler. >
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