IMC Error Message

[Wolfgang]

Hello,
I got from the IMC, reproduceable, the following error message.


I can avoid the error message if I reduce the number(quantity) of the objects.  Now my question is this is a mistake or I have arrived on the actual maximum - how big -where - is this maximum?
The IMC should process here ~80.000 000 objects (buildings).

[gregory]

It's a maximum limit.

The limit is much larger on major version 13+ but is a bit restrictive on version 12.

It's a bit tricky to say where these limits actually are.

Major Version < 13 has a single file limit on this section of 500 MB.
Major Version >= 13 has a single file limit on this section of 3 GB.

IMC will automatically split datasets that are larger than this but there is only so much it can do that and still work on some of the chart plotters.

[Wolfgang]

Hello, Gregory,
thanks for the short-term answer.
if there is a method like one before can calculate how big the AT5 becomes - uncarriage.

The background is a routine if it has extracted the data from a database, has generated Shapes and has exported, start then IMC and packs the AT5 and make a upload.
I split the Shapes already if more than 2 000 000 records exist. If the complete project too largely I would have to divide this still once.
Hence, to determine the question after a fist formula around the size.

[gregory]

The creation process is too complicated to be easily able to determine that.

It would take as long to calculate as it would to generate the files.

The size limitation applies to roughly 4 or 5 degree by 4 or 5 degree tiles on the Large Scale.

[Wolfgang]

Hello, Gregory,
also here thanks for your answer. 
Then I must think over my planning once again. 

[gregory]

Object density is the biggest problem.

Some of that OSM data has buildings as small as an outhouse independently defined.

A size threshold to remove minor objects may be a good idea to get you under the threshold.

Excessive text information can also increase your data sizes.  You can do object grouping/dissolving if matching attribution to get around some of that.  That can be done for areas/lines/points (with multipoint geometric structuring).  Only drawing objects can't be combined like this.  Be careful to dissolve with areas if you combine them as overlapping areas will cause issues while rendering.

[Wolfgang]

I have evacuated quite early building in a specially map, as an Overlay. Also I do not have for smaller zoom steps additional simplistic geometry added the smaller objects any more indicated do not separate. I carry along with the surface of the building as an attribute. I will examine sometimes like building looks first to explain greater than a European norm garage are (18 m ² / 200 ft ²). The detail is the enemy of the great one... 

Thank you, and a nice weekend.