Mapper: Indicate insufficient dimension of lines and areas during editing

[ollesmaps]

It would be cool if minimum dimensions for areas and lines could be predefined.

For example ISOM2017 minimum dimension for 406 Vegetation, slow running is 225 m2. If this area symbol is drawn and is bellow limit it could be somehow highlighted it is bellow minimum dimensions. The highlight changes only when area is over minimum dimension.

Ideas for highligting:

• the thin red line that is around objects that are being drawn shall have a different colour as long as the area /length is bellow limit.
• symbol icon highlight

The minimum dimension could be built in within each symbol definition. With that it could be possible to perform more easily an overall checkup of finished map. Something like http://oapp.se/Applikationer/CheckOMap.html

[dg0yt]

Do you sometimes use the desktop version? We already do have minimal dimensions. However, they are only used in the "measurement" window at the moment.

The strict way of enforcement would be to NOT show the object (apart from placeholder in a different color). I can hear the outcry when you cannot draw a "narrow ride" below minimal length - people take for granted what they are used to from other products ;-)

[ollesmaps]

You are right (now I see it on desktop, most of the time I use the app ) there is a minimum size option. And it shows up when measured. That is great.

I agree a strict enforcement would be too strict. I would prefer a highlight that shows up already during drawing. This way you can adjust your mapping straight away and do not have to make time costly check ups at the end.

[lpechacek]

I myself would be happy for an automated checker checking minimum lengths, areas and gaps. Given enough programmers, the first two are trivial to implement. For the third one I do have some idea. Code contributors wanted! :)

@ollesmaps Another possibility would be to persuade CheckOMap author to extend the tool with OO Mapper format support.

[dg0yt]

Another option would be to add this as a special feature/keyword to the "Find" dialog. This gives you both "Find all" and step-by-step.

[dg0yt]

Previous tickets: #35 Problem widget, #302 Map report and problem browser tool, #651"Minimal length" of linear symbols.

[ollesmaps]

Relates to: http://orienteering.org/new-control-process-for-mapping-for-iof-events/

[ollesmaps]

Or it can change symbol icon background color when object is being edited - if under limit highlighted color, if ok as usuall.

[mlerjen]

Related: https://github.com/OpenOrienteering/mapper/issues/610

[ollesmaps]

At some point I noticed the Measurement tool had built-in under minimum sizes feature. I can not see it there any more (now 0.9.1). That was good and simple solution!

[lpechacek]

AFAICT, the function is still there.

However, the map symbol definitions must contain the minimum dimension numbers. For instance, if you open an .ocd file, the minimum size checking won't trigger as the fields are not filled in. Would that be an explanation to what you are seeing?

[ollesmaps]

I may do st wrong. I see this (Mapper 0.9.1):

[ollesmaps]

Oh I see the problem now. It is import from Ocad. So the minimum dimension is not set. Sorry for confusion. Thanks Libor!

[valdisj]

So what is we come back to this idea once more - for legibility of map reading, quality of drawing extremely depends on if minimum sizes, dimensions and distances are taken into account. Suggestion: to implement a setting / or a process similar to OCAD legibility setting, which, when launched, does mark all the objects, if they are not according to minimum size or distance between them and others. Anybody has good simple ideas how to show that on screen?

[ollesmaps]

The _Measurement tool with built-in under minimum sizes feature_ is very good!
If there is in future a possibility to:
1) minimize the pop up window - it occupies too much drawing spaces at the moment.
2) and still be able to see there is a minimum size clash (bright color inside the pop up window?)

I think then this issue would be solved.

[dg0yt]

@ollesmaps Did you notice that this is a dock widget which can be attached to the same region as the symbol widget? Or do you refer to the Android user interface?

[lpechacek]

On Android, the widget can be docked above, next to, or below the drawing area. Not sure if that helps Olles, though.