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Here we add the XMEAN and ZMAX keywords to a crate, the first with the mean of the x array and the second with the maximumn value of the z column.
Most of the Vector functions apply their operations to each element of the x array thus avoiding the often tedious scaffolding required by an otherwise un-encapsulated double array.
This example calculates the grouping and quality arrays that represent the input data (here the contents of the x array) after it has been grouped using the group boundaries specified by the xl and xh arrays.
So changing the values in the x array - which was created using copy_colvals - does not change the values stored in the crate, whereas changes to the values in the y array - which was created with get_colvals - are propagated to the crate, and hence into the output file tbl2.dat.
The first call to set_arbitrary_tick_positions changes the X axis (ax1), adding the labels in the xl array (i.e. the Month names read from the data file) at the positions given in the x array, which is the same array used when adding the curve.
In the frequency range lower than this connecting frequency, we select phase velocities obtained from the larger size array (e.g. X array), and in the higher frequency range, we select phase velocities obtained from the smaller size array (e.g. L array).
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Fig. 5 Propagation directions estimated from all the f-k spectra for S, M, L, and X arrays at site CUH.
Support needles of Dual Hot Wire (DHW) anemometers induce significant inaccuracies for flow angle and turbulence measurements in the case of X-array probes with prongs perpendicular to the flow plane.
We divide the observed recordings of the vertical component into time segments with a length of 20.48 s for the S- and M-array recordings, and 40.96 s for the L- and X-array recordings, by overlapping one-half of each window length.
Fig. 4 The f -k spectra plot of four different frequencies: 0.88, 2.25, 3.81, and 5.76 Hz are calculated from microtremors records observed by X, L, M, and S arrays, respectively, at site CUH. Figure 5 shows the propagation directions we estimate from all the selected f-k spectra for the: (a) S-array, (b) M-array, (c) L-array, and (d) X-array, at the site CUH.
Fig. 2 Array configurations of S-, M-, L- and X-arrays at the CUH site.
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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com