Reweighting a WT-Metad simulation

[jerryt...@gmail.com]

Dear Forum,

My apologies for the long message.

I have done the metadynamics tutorial 21.4 and would like to make sure I have used reweighting correctly to add a second CV and the plot the data.  My system is a simple reaction transformation:

(CH3)2N-NO + H2O -> (CH3)2NH + HONO

My original MetaD used the N-N bond distances as CV1. I want to include the formation of the N-H bond as CV2 by reweighting the original trajectory with the driver, then visualize with a contour plot and calculate Free Energy. I've attached the original and reweighted plumed.dat and COLVAR files, as well as the snippet of python code I used for the contour plot (from 21.4 tutorial)

My questions are:

1. Did I do this correctly?

2. How do I deal with the white space (-inf?) data in the ff12.dat file?

3. Other comments/suggestions?

I am finding Plumed to be very valuable tool in my research. 

Thank you so much for your help,

Jerry