Getting index of data source at specific value in HyperStudy

Dominik T.

Hello,

i have two curves as output sources in HyperStudy.

Now I need the index at a specified value of one curve. It is possible that this specified value is not exactly included in the data source. So maybe it has to be interpolated.

Then as second step I want to use the founded index of the first source in a second source to get a value.

Example:

f1(index1)=100 <=> index1 = ?

*value=100 must not be included in the data source. For example there could be included 99 and 102.

f2(index1)=?

 

Thanks a lot!

Michael Herve

Hello,

 

If I understand you correctly, you have two data sources representing a X vs Y curve (force vs deflection, Stress vs strain,...), and you want to know what is the Y value corresponding to the X value, with the possibility that X target value does not belong to the data source.

For such cases, you don't ned, the index, you can use the statement lininterp (for linearinterpolation).

Let's name ds_X your data source for X vector, ds_Y your data source for Y vector, and targetX the target valeur, then the formula is:

 

lininterp(ds_X,ds_Y,targetX)

 

Hope this helps

Michael