|Metadata, extent different in GM and in QGIS

alberto_fr

Hello,
Im dealing with QC and i have to make some calculations related to a combination of extent coordinates and resolution, the question is that i find differences in Gm 22.0 b101920 challenged to QGIS extent... I thought there was just an extent...
Could you please let me  know what do you think about it?

https://www.dropbox.com/s/hpsajp8trd2ydg3/dtm.rar?dl=0 GM 22 QGIS UPPER LEFT X=724882.500 724880.000 UPPER LEFT Y=2686897.500 2686900.000 LOWER RIGHT X=745452.500 745455.000 LOWER RIGHT Y=2665647.500 2665645.000

Thanks in advance,
Alberto

bmg_bob

Hello,

In the metadata for a DTM, the UPPER LEFT and LOWER RIGHT values represent the center of the upper left and lower right pixels in your data. Since each pixel is 5 meters square, the true boundary would be found by expanding the rectangle by 2.5 meters in each direction. To see the actual bounds:

• Right-click on the layer in the Control Center 
• Choose Layer > BBOX/COVERAGES... Click the Yes button to create a rectangular area feature. 
• After the new layer is added to the Control Center, view its Metadata to see the bounding coordinates.

Cheers,
Bob

alberto_fr

Thank you Bob,
I think i can step forward with this answer,
Thanks again,
Regards,
Alberto