topic help with plotting piecewise function in Mathcad

help with plotting piecewise function

rb3 — Fri, 17 May 2019 13:24:21 GMT

Hi, can someone help me, I cannot figure out what I am doing wrong in this. The error I get is that the value must be a scalar.

Re: help with plotting piecewise function

terryhendicott — Fri, 17 May 2019 14:01:14 GMT

Hi,

Because you have not included the Prime sheet I have expressed the function in terms of all the input values.

Not sure if you are using Prime 15 or 14?

In your sheet T is a range variable so the comparison with a single variable T0 cannot be done.

Cheers

Terry

Re: help with plotting piecewise function No 2

terryhendicott — Fri, 17 May 2019 14:09:38 GMT

Hi,

Forgot you also need to include what happens when T is equal to the comparison boundary limits.

Here is one way.

Cheers

Re: help with plotting piecewise function

rb3 — Fri, 17 May 2019 14:11:01 GMT

Hi Terry, I'm using Prime 5 and I'm ultimately trying to plot the piecewise function that I was attempting to define with the code posted. I made those changes, but it still is not working. T0 is a single value, where T is an array, I tried a while loop to populate Sa but I could not get that to work either. I'm just trying to populate Sa with values and then plot Sa and T.

Re: help with plotting piecewise function

terryhendicott — Fri, 17 May 2019 15:22:49 GMT

Here is the plot with some values assigned to the variables. T is a vector of values.

Re: help with plotting piecewise function

terryhendicott — Fri, 17 May 2019 17:20:20 GMT

Hi,

Here is chart using the Chart Component of Prime5

Re: help with plotting piecewise function

Werner_E — Fri, 17 May 2019 17:45:02 GMT

Not sure if you are using Prime 15 or 14?

Wow! You sure are far ahead of your time 🙂