Dear Qfield Community,
This is my first post. Thanks for any help you can provide.
I’m migrating my field-based GIS app from Gaia to Qfield. I use an iPhone Qfield and a Macbook for QGIS.
I like having waypoint icons that tell me what the waypoint is for (e.g. “bridge”, “trailhead”, etc.
In QGIS I started by making rules for my various waypoint types, so that “svg” icons could be assigned based on my entries in a field in the gpkg layer called “sym” (for ‘symbol’)
These icons look great in QGIS but do not show up at all in Qfield. However, if I make the svg icon files “embedded” in the panel that allows me to control the rules, the icons show up in Qfield.
BUT (and it’s a big butt), the icons in Qfield are unusably TINY!!! Below is a screenshot from my iPhone and you really have to squint to see the icons. (There’s several “tree” icons along the west side of the river and a “ruin” on the east side.)
I should also say that the size of the icons does not change when I zoom in our out, as they do in QGIS.
Does anyone here have a solution to this problem?
Sincerely,
Ken
Hello @kdjacob2000 !
Can you share the style settings you are using for your icons?
In my experience, different OSes and devices will ultimately render the scale of things slightly (and some times not so slightly!) different, probably for the way in which each OS handles the “high density” displays of today. Usually, if the scale of an element is measured in “pixels”, for me there is a higher change of things going out of wack, because there are multiple, and valid, ways of asking “how big is a pixel on this screen” and programmers inevitably end up using multiple ways of “asking the same questions” with different results.
For example, I’ve made a test with this config:
There you can see on “1” that I’ve changed the unit from the default “Millimetres” to “Points”. In my case, I see less change from one system to another, but try them out to see if another works best for you. But keep in mind that pretty much all the options not related to the zoom level or scale of the map are in some way or another dependent on how the OS tells the programmers how big something is on the screen and there is no single valid way to ask and answer this question across systems (at least that I know of).
The most practical way to get a closer match for small discrepancies in scale I’ve found is to use the Magnifier setting (marked on “2” on the above screenshot). This has worked pretty well for example when opening a project on QGIS on a Linux PC and on a Mac.
Dear cuprico,
Thank you very much for your reply. It’s been a while since I struggled with the problem I described, but I remember playing around with pixels vs. points etc.
I’m going to wait to see if there’s more responses and then dig in again. I’m frankly surprised that this isn’t a bigger issue for folks (I scanned for similar posts).
I’m thrilled with the ability to move back and forth between QGIS and Qfield but I’m so far disappointed with the way helpful icons are rendered in iOS.
@kdjacob2000 , feel free to attach a sample project here for the community to help you refine your symbology settings.
Dear Mathieu,
Thank you for your reply.
I plan to wait another day or two to see if there are other responses, then try a few more experiments adjusting point/pixels/etc to see if I can solve the problem.
In the meantime, could you advise me please as a new member of what to share and the best way to share it?
For example, would a link that allows a zip file containing everything in a test QGIS project folder be sufficient?
Sincerely,
Ken
