Re: 3d data interpolation

[WERT]

The x,y values form a relativly linear surface that twists in the z
direction.

The data is taken from a valve calibration. The pressure is measured
for each position of the valve. However there is a 3rd variable in the
system. This means that the pressure required is dependent on valve
position and the 3rd variable. This third variable causes small
changes in the other two.
What I am trying to do is calculate my valve position for a known
pressure and 3rd variable.

The data doesn't need to be smoothed.

3d data interpolation

[WERT]

I have a set of 3d raw data. Is there a VI that will simply
interpolate a "z" value based on the raw data if both the "x" and "y"
are inputted. Currently I am fitting a 3rd order polynomial to the
data and using this to solve my problem. The main problem with this is
that I don't know how well the polynomial fits my data. If it
outputted an r^2 value than i would be happy.

Re: Writing 2d array of different precision data to a comma delimited text file

[WERT]

Thanks. I tried this. Almost success. The only problem is that the
data is in 4 rows in the text fileand I need it in columns. Is it
possible to do some sort of transpose on a string???

Writing 2d array of different precision data to a comma delimited text file

[WERT]

I have 4 1d arrays of data. I want to write the data (2d array) to a
comma delimited text file to be opened by another application. The
problem been that the standard write to spreadsheet fileVI converts
all my data to the same format i.e. floating point number with
specified floating format. However I require my first 3 arrays to be
decimal integers and the last array to have 3point precision i.e. %f3.