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in which Error is a dimensionless SYS parameter.
- Run a solution for this parameter,
Intpol_Rel_Bwill be calculated by Quaestor automatically because it is required byError. Make sure you use the Process Manager to select theShipsobject as dataset. ForFrame, enter 3.20 again.
The solution in two-digit format (-0.00) will be presented in the list of the Workbase. When you select this solutionvalue, more digits are shown in the Frame Viewer (figure 2a) or the Explanation window (figure 2b). Note that you .
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You can change the number of decimal places presented in the Workbase by changing the value Decimal places in the |
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Properties window. |
Please, realise that for
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For input values, |
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the number of |
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decimal places also defines the maximum accuracy accepted for this input. So, when you |
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define |
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decimal places, providing input with three will give a warning |
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followed by rounding the provided number |
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to two |
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decimals. |
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Figure 2a In the Frame Viewer, more digits of the selected parameter are shown
Figure 2b In the Explanation window, more digits of the selected parameter are shown
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- Change the number of decimals to 4 for
Error,Intpol_Rel_BandRel_Bto 4. - Change the relation (find the relation and press F2) for
Intpol_Rel_
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Bto
Intpol_Rel_B = DQUAD(@Hull, 2, @Frame, @Rel_B, Frame)
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which uses the same data, but now performs a quadratic interpolation. It's not necessary to initialize existing solutions.
Editing relations was covered in tutorial 2. Remember that the use, syntax and examples of all quaestor Quaestor functions are available in the wikidocumentation: functionsoverview.
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- Run the solution
Erroragain with the same value ofFrame.
The error now turns out to be zero. This makes sense, as DQUAD is a quadratic interpolation method and this waterline is defined by a quadratic function as well.
4 Integration : waterplane area
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