Show in LAS file the curve Mnemonics on ~ASCII section with lasio

Question

When writing a LAS file using:

 las_data.write(new_File,version=2.0)

I loose the curve Mnemonics placed on the ~A or ~ASCII line My petrophysicist loves seeing them listed on that line just above the data columns. When writing a LAS file using lasio it doesn't work

Below is the code showing how I create the line - same as I write when altering other headeritem lines. From reading the LASIO documentation I started to wonder whether those Mnemonics are included as column headers in the dataframe with the data columns. Hence the final statement line below but to no avail.

    #Update encode ~ASCII with curve names
        las_dat.encoding = "~ASCII DEPT"
        counter = 0
        for curve in las_dat.curves:
            x=6 #spaces between curve Mnem
            if counter>0:
                las_dat.encoding = las_dat.encoding + " "*(x- 
                    len(curve.mnemonic.strip(' ')))+curve.mnemonic.strip(' ')
            counter = counter + 1
        las_dat.set_data(df)         #Seems like ~A line is part of df

Here is an example of the ~ASCII line: '~ASCII DEPT ILM SFL ILD CILD SP NPSS C1 DRHO RHOB DPSS PEF GR HDIA'

Answer 1

This is partially available in the current Lasio release: v0.30

• "Partially fix #375 (allow writing mnemonics in ~ASCII line; PRs #466, #471, #465)"