austrian basemap

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Re: austrian basemap

by Psyberia-Support » Tue Mar 16, 2021 11:15 am

For the image formats, you can only use "PNG" (lossless), "JPG" (quality based on the "image_quality" parameter, from poor to almost lossless) and "WEBP" (quality based on the "image_quality" parameter, from poor to almost lossless).
Note that the PNG and WEBP formats support transparency, JPG not (so it's not suitable for layers with transparent background or areas).

Re: austrian basemap

by helwin » Tue Mar 16, 2021 9:51 am

You are right, it´s not the same data.

I contacted the folks at basemap.at and they say that they do not know the cause, but they will check it.

Concerning the imported maps, I guess I can also use .bmp instead of .jpg? Like ...image_format=BMP ?

What is the largest file size the app can handle?

Re: austrian basemap

by Psyberia-Support » Mon Mar 15, 2021 11:04 am

I am wondering what could be the cause of the quality deterioriation when comparing the original data and the alpinequest image?
You're not comparing the same images.
In the AQ screenshot, you can see there are some inlaid information (I can read "2019" and "geoland...") which is not added by the application. So even if the original image is the same, the one displayed in AQ had an extra processing done before being accessed by (and outside of) the app.
A similar deterioriation in image quality occurs when using plain image maps.
When importing images as maps, the application will (re)compress the imported images with its own parameters that are a good compromise between size and quality.
By default it uses the WEBP image format (with a claim of up to 34% less size than JPG for the same quality), and a compression quality of 80%.
If you don't care about size and just want the maximum quality, you can increase the compression quality with this user setting:

Code: Select all

maps.features.offlinemaps.formats.gen_import.image_quality=95
You can also force the application to use the JPG format with:

Code: Select all

maps.features.offlinemaps.formats.gen_import.image_format=JPG

Re: austrian basemap

by helwin » Sun Mar 14, 2021 8:42 pm

Edit:

A similar deterioriation in image quality occurs when using plain image maps.

A 60 Mb .jpg file is imported and turns into a 38 Mb .pgd file...with less resolution...

Re: austrian basemap

by helwin » Sun Mar 14, 2021 7:46 pm

I am wondering what could be the cause of the quality deterioriation when comparing the original data and the alpinequest image?
ss.JPG
(60.89 KiB) Not downloaded yet

Re: austrian basemap

by helwin » Sun Mar 14, 2021 7:10 pm

Ok sorry of course I meant opacity...

I found a good solution with storing a favorite "compare" set, and the "compare" slider displays automatically. Great!

Re: austrian basemap

by Psyberia-Support » Sat Mar 13, 2021 8:04 pm

Hi again,
If you're really talking about the "Layer blending mode" (ie Normal, Product, Darken, etc.), then no there is no shortcut. This mode is saved and restored with the favorite set, I don't see why you want to change it often.
However if you're talking about the opacity of the top layer, then yes there is a shortcut: add the custom menu item called "Layer opacity". If you put this item at the first place, then long pressing the main menu icon will directly display the layer opacity control (of the top most map).
Note that you can also put your 2 maps in 2 different favorite map sets: display the first one, then long press the second one and choose "Add as layer", in this case the opacity control will be immediately displayed.

Re: austrian basemap

by helwin » Sat Mar 13, 2021 5:17 pm

Thank you so much for designing my very personal file, and it works great.

But human nature is like, fulfil one wish and three more will arise :-)

So I created two favorite sets of these distinct dated areal images and one with both of them in order to blend them.

What I miss is a shortcut.

Right now the steps are:

(maps menu- tap the favorite set-dispayed maps- ) tap on upper map and the layer blending is displayed- blend.

Is there a way to store a favorite set of multiple maps and display the layer blending mode right away?

And that pre-installed "Base map"..
AQSS.JPG
(49.22 KiB) Not downloaded yet
...I can´t change anything on that, only tap "details", so why display it anyway?

Re: austrian basemap

by Psyberia-Support » Wed Mar 10, 2021 4:59 pm

Yes, "displayed maps" ...long press..."force update..." only update what is displayed.

Concerning your problem, I have never noticed this.
Note that if the last zoom levels is higher than 20, the data won't be stored (unless the map storage has been created with AQ 2.2.8).

If your AQX file does not contain personal credentials, you can email it to me so I can make the changes described above and check the last zoom level problem.

Re: austrian basemap

by helwin » Mon Mar 08, 2021 8:17 pm

edit:
This happens only in areas that are already stored to the highest zoom.

In all other areas the app will happilly automatically update the missing zoom levels while moving the map.

Re: austrian basemap

by helwin » Mon Mar 08, 2021 8:03 pm

Ok thanks I will try this.

But there seems to be a strange behavior...before trying this I toyed around with updating some areas (without having modified the .aqx file) via "select and save an area" and noticed that it did not work.

The area would not update.

Only via "displayed maps" ...long press..."force update..." the map updated ( only the current zoom level, but this is the intended behavior I think?)

"Use only local storage" is unchecked of course.

Any ideas?

Re: austrian basemap

by Psyberia-Support » Mon Mar 08, 2021 2:33 pm

Not the file itself.

Open it with a text editor, and duplicated the part from "<source>" until "</source>" (example here).

Then in the duplicated bloc, change "<source id="AUSBASEPHOTO">" into "<source id="AUSBASEPHOTO_2">". It will be your new data.

Do not touch the other files.

Re: austrian basemap

by helwin » Sun Mar 07, 2021 5:53 pm

Ok it´s me again...
So here is a screenshot of that particular map´s files.
Screenshot.jpg
(62.89 KiB) Not downloaded yet
Are you talking about the file "COM.56.AQX" which I have to copy and change the source ID? Or do I have to copy all the rest as well?

Re: austrian basemap

by helwin » Sat Jul 11, 2020 5:19 pm

A comparison for those of you who wonder why I am so specific on this subject.

The angle of the sunlight can offer so many informations on the nature of e.g. north faces...
2016.JPG
(129.48 KiB) Downloaded 949 times
2019.JPG
(166.24 KiB) Downloaded 949 times

Re: austrian basemap

by Guest » Sat Jul 11, 2020 4:15 pm

Thanx for the info!

But what you call "a simple example" in your online help is actually rocket science for me.

So someone who has the spare time and patience to offer some kind of step-by-step- guide would be much appreciated...

If additional infos from my side are needed I will be glad to supply these.

Thank you and best regards

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