Hello, I really new to Mathematica and I am working on developing interactive CDF. To understand the basics I start with a simple example but even with that I have a problem. In this simple CDF I want to able enter a function (Sin, Cos...) This is the example that I started from Panel[DynamicModule[{f = Sin[ x]}, Column[{InputField[Dynamic[f]], Dynamic[Plot[f, {x, -5, 5}]]}]]] But here I would like to be able not only change the function also the range and one more parameter such as frequency. So I know I need to use manipulate (I want to use as CDF) Manipulate[ DynamicModule[{f = Sin[o x + p]}, Column[{InputField[Dynamic[f]], Dynamic[Plot[f, {x, -5, 5}]]}]], {o,1, 10}, { p, 2, 10}] but here I can't change the function even I type Cos and slide the o or p it goes back to Sin. I actually prefer something like this Manipulate[ DynamicModule[{f = Sin[o x + p]}, Column[{InputField[Dynamic[f]], Dynamic[Plot[f, {x, -5, 5}]]}]], InputField[Dynamic[o]], InputField[Dynamic[p]]] but Manipulate did not like the InputField. Any idea how I can do this?

I made something like this Manipulate[ Panel[DynamicModule[{f = Sin[x]}, Column[{InputField[Dynamic[f]], Dynamic[NumberForm[NIntegrate[f, {x, xL, xR}], np]]}]]], {xL, 0, 1}, {xR, 0, 1}, {np, 10, 30, 1}] It works for CDF ...

This is really nice it will help me a lot. Let me ask you couple of things (I appreciate your help) In your code you o with oval and p with pval because you are using hold? Do you know away of doing it with a calculate button? As in the code will wait for that push button or a tick in order to make the calculation?

Hi! You could add a button that when pressed, assigns the plot expression to a variable: Manipulate[ Column[{Button["Calculate", plot = Plot[ ReleaseHold[ReplaceAll[f, {o -> oval, p -> pval}]], {x, -5, 5}]], Dynamic[plot]}], {{oval, 1, "o"}, 1, 10}, {{pval, 2, "p"}, 2, 10}, {{f, Hold[Sin[o x + p]]}, InputField[Dynamic[f], Hold[Expression]] &}, {{plot, Plot[Sin[1 x + 2], {x, -5, 5}]}, None } ] plot is a dynamic variable inside manipulate, but since I specified "None", it does not have a control associated with it. I realized what causes the problem in your original code: Manipulate[DynamicModule[{f = Sin[o x + p]}, Column[{InputField[Dynamic[f]], Dynamic[Plot[f, {x, -5, 5}]]}]], {o,1, 10}, { p, 2, 10}] Since o and p are tracked by manipulate, any changes to them will reevaluate expressions inside of it. This includes the assignment f=Sin[o x +p] in DynamicModule. In fact, I think the whole dynamic module will be re-instanced.

Manipulate and dynamic complex input fields