Michael Houfek, I'm a fellow CTU ("CalTopop User").
One approach that might work, that I have used:
1) Create a CalTopo map with the base layers, overlays, and opacity levels you want.
2) Add 1 object to the map.
3) Save the map.
4) Delete the 1 object you added from the saved map.
Then, when you want to start with the base layers, overlays, and opacity levels in the map you saved:
5) Load the map using "Your Data/Your Maps"
6) Close the map by licking on "circle-X Close"
I think you will have a map where the URL of the map contains the information for the base layers, overlays, and opacity levels you specified above.
Let me know if this is helpful and if it works for you.
(You can also simply bookmark the URL of the map you created in step 1 above, but the above steps allow you to access the map you created from within the CalTopo phone apps.)
Julie on 10 May, 2021 09:05 PM
In CalTopo, you can only save a particular view if you have a map saved with an object on it. That's what Tom is getting at about adding the marker, saving the map, then deleting the object from that saved map so that you essentially have a saved set of layers only. It's a few extra steps, but that is one work around.
Otherwise, at this time we don't have a way for the map viewer to always load with a particular set of base layers and overlays of your choice. However, when you do save a map after adding objects to the map viewer, you can choose to tell it to always open that particular saved map with the current layers.
I have several objects, lines and routes on this map. Every time i open it up to work on it, it defaults back to a base layer MapBuilder Topo, TF Outdoors which are not the ones I was using or want. I understand what you are saying about an object has to be there to save but I have plenty of items on here.
Julie on 11 May, 2021 02:43 PM
Ok, thanks for the update! If you have a lot of map layers stacked on top of each other, than can sometimes slow it down as it has to load all of them even if the display is set to 0% on some of those layers.
After working with this I figured out that when I save a map after creating for the first time there is a prompt with selections. This is where I needed to select "save maps upon reload". This is the solution to my issues. thank you
Is there a way to send the map base layers and overlays to my gps? I have watched many youtube videoes and not sure? So far when I export to basecamp then to my handheld garmin unit only the routes and waypoints(markers) are tranferred. Really want the maps on my garming if possible. thanks
One thing is that I do not have a "downloads" box under my data. I find it frustrating that I don't have the same Caltopo I am using on my desktop as the app version for smart phones. I will keep trying later tonight.
Meghan on 13 May, 2021 11:32 PM
I would also suggest checking out exporting MBTiles to your Garmin GPS as well: https://training.caltopo.com/all_users/print/print3#kmz. You'll have to do it from the web app but it will allow you to download a KMZ file of your map that includes background layers and map objects. You can then load that file into your GPS device and view it there.