Databases Reference
In-Depth Information
Pressure ppsi
Pressure ppsi
Pressure ppsi
Deformation
Pressure ppsi
Defect
HY80
Pressure ppsi
FIGURE 9.35
Free body diagram for data in Figure 9.34.
right-clicking on column C and choosing “Set As Z” as shown in Figure 9.37. With column C
converted from type Y to type Z, the final step is to generate a matrix to create a 3-D plot.
Because the data in the new Origin Worksheet is not in order, the type of matrix that should
be selected is “Random XYZ.” To create the matrix, the user selects the Z column of the Worksheet
(in this case column C), and selects
E
dit->Convert to
M
atrix->Random
X
YZ. When this happens,
the dialog box shown in Figure 9.38 will come up.
Using the default number of columns and rows (70), and a smoothness of 0.5, the “Apply”
button can be pressed. Note that smoothness is defined over an interval of 0.5-1.2, where 0.5 is
the smoothest. The search radius is how many adjacent points are utilized on each side of a
measurement for interpolating a spline between adjacent points. Once the Apply button is pressed,
Origin begins generating the matrix and plotting the results. This can take anywhere from several
seconds to several minutes, depending upon the number of data points and the degree of irregularities
in the given data set. The progress bar in Figure 9.38 is shown while the matrix is being generated
and plotted for the sample data set.
Figure 9.39 shows a rough plot generated for the given data set. Notice that this plot is done
in “Speed Mode,” which means only a subset of the given data points are fitted and plotted to save
time. This can be a tremendous timesaver when working with a plot while adding Labels, formatting
FIGURE 9.36
Opening an Excel Workbook in Origin.
