The cpz file type is listed as a file type that TBC is able to import/export but the “import” button is greyed out when a .cpz file is selected using the import command. I’m trying to find a way to read it so I can convert to .csv or Topcon format. Thanks
something you’re willing to share?
Okay. Thanks Allen! Really appreciate you.
Hi. I might be able to help.
A.CPZ file is just compressed point file.
You can right click and unzip the file to reveal the .PNT file inside.
PNT is readable by TBC but you can also rename the extension from .PNT to .CSV and then open it.
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Thank you Rory. You’re absolutely correct. Seems strange to compress this control point file that’s only 535 bytes or any .csv file really, is this format mainly used for point clouds or something? Thanks.
The CPZ file is apparently used by Trimble Earthworks. It is a conteol point file in a zip file. It is only supported as an Export from TBC according to Trimble team which would explain why it is greyed out for Import.
However you can as detailed below extract the file from the zip or define an import format that can read the file.and it should unzip if you set the extension to be that of the file in the zip file rather than cpz. TBC will.unzip zip files and read the files inside if it has importers for those files. You may have to.rename the cpz to zip to achieve that
Alan
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Happy to help. Whenever the you see a Z at the end of a file extension it usually means some form of compression.
CPZ is a compressed .CSV or .PNT file
DSZ is a compressed machine control file for earthworks. If you unzip it you will find the .SVD & .SVL for GCS900 inside.
Same with .LAZ for point clouds it’s just a compressed .LAS
KMZ files for google earth are just compressed KML files.
I do not think the compression is an attempt to reduce the file size, just a means of packaging data together. I have found on google earth that a KMZ can contain not just lines or points but also images and useful information all packaged together into 1 folder.
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