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Clear[Rth, Phex];Rth[tmax_, tin_, qmax_] := N[(tmax - tin)/qmax];Dynamic[Manipulate[Panel[Column[{"Rth:", Style[Rth[tmax, tin, qmax], Red, Bold, 14]
 }, Frame -> True, Background -> LightBlue, FrameStyle -> Red],"Calculated Values :"],Text[Style["Calculator", 20, Background -> LightBlue, 
FontWeight -> Bold]],Delimiter,{{tmax, 80, "Temperature (\[Degree]C): "},ControlType -> InputField, FieldSize -> 5},{{qmax, 5000, "Load (W): "}, ControlType -> InputField, FieldSize -> 5},{{tin, 50, "Inlet Temperature (\[Degree]C): "},ControlType -> InputField, FieldSize -> 5},{{tamb, 25, "Ambient air Temperature (\[Degree]C): "},ControlType -> InputField, FieldSize -> 5},{{m, 1.0, "Flow Rate : "}, {0.5, 1, 1.5, 2},ControlType -> RadioButtonBar, FieldSize -> 5},Item[Button["Calculate", Nothing, BaseStyle -> {15}], Background -> Blue],LabelStyle -> {20}, ContentSize -> 500, Frame -> True,TrackedSymbols :> All,Frame -> True, FrameMargins -> Automatic]]

In the above code, we get the output as a calculated value of Rth (0.006 by default). This value will change as per the user inputs.

I also have one table given below:

CP =  TableForm[{{0.0078, 0.0066, 0.0088, 0.0082, 0.0078},{0.0058, 0.0049, 0.0073, 0.0067, 0.006},{0.0054, 0.0046, 0.0068, 0.0065, 0.0056},{0.0051, 0.0041, 0.006, 0.006, 0.0051}},TableHeadings -> {{"0.5 GPM", "1.0 GPM", "1.5 GPM", 
 "2.0 GPM"}, {"CP-1000", "CP-1001", "CP-1002", "CP-1003", 
 "CP-1004"}}]

Now I want to display one more output beside the calculated value, which will be the table's heading. I have Rth 0.006 as the computed value at 1 GPM in the default case. Now I want to make logic such that the calculated value goes to the table and sees where this value is matched. And display the column heading.

Example: Rth =0.006 at 1GPM (Row). The output will be CP-1004 (2nd row & 5th column). And if the output is not matched with the table value, it should show the nearest smaller value column heading name.

Like: The calculated value of Rth= 0.005 (For different user input), The closest smaller value at 1 GMP Row is 0.0049. At that condition, the Column heading CP-1001 will be displayed as output.

The logic should work the same if the user changes GPM or Row values like 0.5,1.5,2 GPM.

Does anyone have any idea how I can make this logic?

I appreciate any help you can provide.

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  • $\begingroup$ Please improve the title of your post. $\endgroup$
    – Syed
    Mar 23, 2022 at 12:46

1 Answer 1

Reset to default
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Here is a quick and dirty routine to get the heading. It uses the table CP:

Input: rth== calculated value, m== flow rate

getHeading[rth_, m_] := Module[{pos, col},
  pos = Position[ToExpression[StringTake[#, 3] & /@ CP[[2, 2, 1]]], 
    N[m]];
  col = Position[CP[[1, pos[[1, 1]]]], 
     Nearest[CP[[1, pos[[1, 1]]]], rth][[1]]][[1, 1]];
  CP[[2, 2, 2, col]]
  ]

Here is an example:

getHeading[0.0052, 1.5]
(*"CP-1000"*)
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31
  • 1
    $\begingroup$ E.g.: Row[{Panel[ Column[{"Rth:", Style[tmp = Rth[tmax, tin, qmax], Red, Bold, 14]}, Frame -> True, Background -> LightBlue, FrameStyle -> Red], "Calculated Values :"], getHeading[tmp, m]}] $\endgroup$
    – Daniel Huber
    Mar 23, 2022 at 13:10
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    $\begingroup$ Simply change "Neareast" to "Min" $\endgroup$
    – Daniel Huber
    Mar 23, 2022 at 13:53
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    $\begingroup$ I think you should make an effort to learn the mathematica language. Here is a function that gets the value from row and column headings: getValue[row_, col_] := CP[[1, Position[CP[[2, 2, 1]], "1.5 GPM"][[1]], Position[CP[[2, 2, 2]], "CP-1001"][[1]]]][[1, 1]]and the is an example: getValue["1.5 GPM", "CP-1001"] $\endgroup$
    – Daniel Huber
    Mar 31, 2022 at 11:44
  • 1
    $\begingroup$ Sorry, here is the correct function: getValue[row_, col_] := CP[[1, Position[CP[[2, 2, 1]], row][[1]], Position[CP[[2, 2, 2]], col][[1]]]][[1, 1]] $\endgroup$
    – Daniel Huber
    Mar 31, 2022 at 19:09
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    $\begingroup$ Try e.g.: getValue["1.5 GPM", getHeading[0.0052, 1.5]] This gives 0.0054. I think your mistake are the quotation marks around getHeading[..]. If you really want to give "getHeading[ rth,m]" as a string, you need to wrap ToExpression around it. $\endgroup$
    – Daniel Huber
    Apr 2, 2022 at 9:33

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