Wave-dependant Y scaling of 2D wave

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Fri, 08/07/2015 - 02:06 am

Hi all,

I have a 2D wave (24,106) in dimension. The X scale is hour (from 0 to 23), but the Y scale corresponds to particle size ranging from 15.1 to 661.2 nm, and the delta between each size is exponential. I'd need to plot the 2D wave as an image, and thus correctly scale the Y axis...
in case it helps, enclosed are the 2D wave (diurnalM_mx), and the particle size wave.

I'm pretty sure I missed something obvious...

Thanks!
J-E Waves.pxp
It should work with the
display
appendimage root:diurnalM_mx vs {*,diameter}

sequence.
However it generates an "In graph Graph0, axis wave diameter has too few points - ignoring it." error; I can have a look later on this (lunch goes first :-) , but maybe this helps already )

HJ

Update:
As the manual for appendimage says:
"These waves must contain one more data point than the X (row) or Y (column) dimension of the matrix."

August 7, 2015 at 04:50 am - Permalink

Allright, so scaling is not necessary is this case... I'd never have thought of the (n+1) diameter wave...
thanks a lot, it works perfectly!!! :)

August 7, 2015 at 07:07 am - Permalink

And generally not possible: there is ONE deltaX and ONE offset which gives a linear relationship. For all other uses, x-waves are more efficient (I think).

De rien,
HJ

August 7, 2015 at 02:51 pm - Permalink