Always write OGR/GMT header in files

[anbj]

Is there a reason why many (all?) gmt tools producing spatial output does not pr. default output the OGR/GMT header (and aspatial data)? E.g. grdcontour, gmtconnect, gmtspatial, block[mean,median,mode] etc.

In my opinion this would be a good idea. This makes workflows involving ogr2ogr ~flawless and consistent.

As a user of QGIS, it also appears that it now requires the OGR/GMT to be present (at least # @VGMT1.0) or else if will fail to recognize the file.

Very related to issue #213.

[PaulWessel]

Fully agree, there are technical reasons why it is not that way; we do want to try to reach that goal.

[anbj]

Great!

[stale[bot]]

This issue has been automatically marked as stale because it has not had activity in the last 30 days. It will be closed if no further activity occurs within 7 days. Thank you for your contributions.

[anbj]

Just adding the header:

# @VGMT1.0 @GLINESTRING

makes it readable by ogr2ogr. Great benefit!