Hello Orlan,
depends where you want to do this.
In the module Report, it can easily be done by changing the stile of the curve. From line to outlined bars.
If you are looking for a way to have the step diagrams in View, you will have to crate new channel containing an interpolation of your original data. This interpolation can be done in the module Analysis again. Choose the method linear mapping out of the second row of functions. It will ask you for an additional x- channel which the new curve will be referencing to. Use a channel you allready have or generate a new reference channel with an appropriate resolution. (You can use the generate data function of the Analysis module for that). Calculating the linear mapping, choose the mapping method stairs in the parameters.
Ingo Schumacher
Systems Engineering Manager CEERNational Instruments Germany