[fixed] Favorite sets- map scale change

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helwin
Posts: 65
Joined: Sun Jun 16, 2019 2:32 pm

[fixed] Favorite sets- map scale change

Post by helwin » Sun Mar 21, 2021 5:21 pm

I do not know if it is a bug or a feature, but when switching between favorite maps, on some sets, not all, the map scale changes.

Psyberia-Support
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Re: Favorite sets- map scale change

Post by Psyberia-Support » Wed Apr 07, 2021 2:10 pm

Hi,
Yes the scale can change a little bit when you select a favorite map to adjust to the new maps levels if they are different.
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helwin
Posts: 65
Joined: Sun Jun 16, 2019 2:32 pm

Re: Favorite sets- map scale change

Post by helwin » Wed Apr 07, 2021 2:34 pm

So I have favorite sets that include my orthophoto and an imported plain image map as a layer.

Switching between them, the scale is absolutely stable.

Then I have favorite sets with these plain image maps ONLY.

When switching to these, the scale changes drastically. This seems to have a certain pattern, like from 1:13 000 it jumps to 1:34 000, I switch back to orthophoto and it is displayed in 1:52 000, switch again to plain image , now in 1:68 000 and so on.

This is quite annoying when operated in the field.

boowoo
Posts: 317
Joined: Sat Mar 30, 2019 7:12 pm
Location: France

Re: Favorite sets- map scale change

Post by boowoo » Wed Apr 07, 2021 2:58 pm

Yes, I have also the same trouble.
Maybe it should be good to use always the "OSM/Google zoom index id" like reference when switching between maps when it's possible ? (ex: zoom 13/14/15)

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Re: Favorite sets- map scale change

Post by Psyberia-Support » Thu Apr 08, 2021 9:31 am

It does. The scale ratio is only for display.
When you switch from a map to another with the same zoom scales (like all OSM/Google maps and equivalent), the scale will not change because an equivalent can be found in the new map, but when you switch to a map with completely different zoom scales, the same scale cannot be used and the closest one is chosen.
I guess the last zoom level of your plain image is 1:34.000 (the current zoom level of the map is displayed in the map infobox after the scale, something like 4/4). Do you conform this?
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Psyberia-Support
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Re: Favorite sets- map scale change

Post by Psyberia-Support » Thu Apr 08, 2021 9:35 am

What could be done would be not to adjust the scale (leave it as before) if the setting "Auto-adjust zoom on map levels" is un-checked (in the "Zoom controls" section). It would make sense.
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boowoo
Posts: 317
Joined: Sat Mar 30, 2019 7:12 pm
Location: France

Re: Favorite sets- map scale change

Post by boowoo » Thu Apr 08, 2021 11:37 am

What I can say is that when switching between OSM maps and Google maps the scale don't change (OK) but if I switch to any french IGN maps ;) the scale go down one level (ex 15 to 14).
If I return to OSM or Google maps the scale don't change (14 to 14 OK) but if I go back to IGN map the scale go down again (14 to 13) etc ...
Same thing for online or outline maps with all levels, of course.
Weird behaviour !

helwin
Posts: 65
Joined: Sun Jun 16, 2019 2:32 pm

Re: Favorite sets- map scale change

Post by helwin » Thu Apr 08, 2021 5:19 pm

Psyberia-Support wrote:
Thu Apr 08, 2021 9:31 am
[....]
I guess the last zoom level of your plain image is 1:34.000 (the current zoom level of the map is displayed in the map infobox after the scale, something like 4/4). Do you conform this?
I absolutely confirm this.

Psyberia-Support
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Re: Favorite sets- map scale change

Post by Psyberia-Support » Fri Apr 09, 2021 4:15 pm

I've made some improvements on this subject:
- First, if you un-check the setting "Auto-adjust zoom on map levels", the zoom scale won't be adjusted when you select a favorite set.
- Then, I've improved which level is chosen on the new map, so it will not reduce the zoom levels again and again.
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helwin
Posts: 65
Joined: Sun Jun 16, 2019 2:32 pm

Re: Favorite sets- map scale change

Post by helwin » Mon Apr 26, 2021 5:30 pm

Thanks a lot! Scale still changes a bit, but not that drastically, and I´m ok with that.

Psyberia-Support
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Re: Favorite sets- map scale change

Post by Psyberia-Support » Mon Apr 26, 2021 7:28 pm

Now it should still adjust to the new map scales, but get back to the previous scale if you select again the previous map.
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helwin
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Joined: Sun Jun 16, 2019 2:32 pm

Re: [fixed] Favorite sets- map scale change

Post by helwin » Mon Apr 26, 2021 7:32 pm

Absolutely, yes. Thank you!

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