topic Re: BUG: Classification lost when importing XYZ or TXT data in ReCap Forum

BUG: Classification lost when importing XYZ or TXT data

peter.hintze — Thu, 13 Jan 2022 10:04:58 GMT

Issue:

When importing XYZ or TXT data (and defining the culumns via the import dialog: X,Y,Z,R,G,B,Classification). The classification values are not imported into the resulting RCS file.

Expected:

Classification in XYZ file should be imported into the resulting RCS file.

see attached txt exmaple file

Re: BUG: Classification lost when importing XYZ or TXT data

Pointdump — Thu, 13 Jan 2022 19:18:19 GMT

Hi Peter,
What does the Classification Value represent?
Dave

Re: BUG: Classification lost when importing XYZ or TXT data

yan.fu — Thu, 13 Jan 2022 19:47:25 GMT

Hello @peter.hintze ,

This is a limitation of current ReCap version.

ReCap loads the classification information from raw scans and saved the classification into .rcs files, however, the classification information is not visualized in ReCap and the classification information cannot be exported.

Better support for classification information is in our Roadmap.

Thank you for your feedback.

Best Regards,

Yan

Re: BUG: Classification lost when importing XYZ or TXT data

peter.hintze — Thu, 13 Jan 2022 22:47:40 GMT

Hi @yan.fu ,

thank you for the answer. I don't refer to the missing option to visualize classes in Recap - I really am refering to the fact, that the resulting RCS file has no classification values anymore from the original XYZ file. When i load the file e.g. into Map 3D / Civil, it already says so in the "Details" report of the RCS file import/attach-dialog. And once imported, the option to visualize the classes in Map 3D / Civil is also greyed out.

When i use LAStools' "txt2las" to convert the XYZ file into LAS and then import the LAS file into Recap creating an RCS, the classification value are saved into the RCS and can be displayed in Map 3D / Civil. But this workaround needs more unecessary steps.

So, my only explanation is, that Recap loses the classes when creating the RCS file even though i have defined the related column in the XYZ-import dialog.

Could you check?

Thx, Peter

Re: BUG: Classification lost when importing XYZ or TXT data

yan.fu — Fri, 14 Jan 2022 05:19:09 GMT

Hi @peter.hintze ,

Thank you for your feedback.

We have logged an issue for it and the dev team will look into it.

Thank you!

Yan

Re: BUG: Classification lost when importing XYZ or TXT data

Pointdump — Fri, 14 Jan 2022 13:12:04 GMT

Peter,
While you're waiting for Autodesk, here's your TXT file converted to LAZ in LASTools. I used "-parse xyzRGBc". Now you have:

histogram of classification of points:
164155 ground (2)
34041 low vegetation (3)
11717 medium vegetation (4)
164650 high vegetation (5)
17847 building (6)

Dave

Re: BUG: Classification lost when importing XYZ or TXT data

peter.hintze — Fri, 14 Jan 2022 22:35:08 GMT

@Pointdump Thank you! 😉

Re: BUG: Classification lost when importing XYZ or TXT data

TerryDotson — Sun, 16 Jan 2022 17:35:21 GMT

But this workaround needs more unecessary steps.

The conversion process to .LAZ should be considered an absolutely necessary step. In storage the .TXT file is taking 12.5x the amount of space, to anyone not familiar with the project there is a possibility of confusion of what the columns represent. Before emailing the .TXT you should ZIP them anyway, would have to on large files.

The .LAZ format should be the standard storage format.

Re: BUG: Classification lost when importing XYZ or TXT data

klarinda.gunadi.widjanarko — Mon, 25 Apr 2022 08:25:53 GMT

Hi @peter.hintze ,

We have made a fix for this in ReCap 2023.

Can you try it to see if it works?

Btw just some note, if you have ReCap 2022 installed, please uninstall it first before installing ReCap 2023.

Thanks.