cansas1d Idata

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  block diagram

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  Q geometry

Name	Type	occurrence	Description	Attributes
Q	floating-point number	[1..1]	Q=(4 π / λ) sin(θ) where λ is the wavelength of the radiation and 2θ is the angle through which the detected radiation has been scattered. The unit attribute is required. See cansas1d_documentation#Rules for acceptable values. Either 1/A or 1/nm are typical.	unit="{units}"
I	floating-point number	[1..1]	Intensity of the detected radiation. The unit attribute is required. See cansas1d_documentation#Rules for acceptable values. One possibility might be1/cm.	unit="{units}"
Idev	floating-point number	[0..1]	Estimated standard deviation of I. The unit attribute is required. See cansas1d_documentation#Rules for acceptable values. One possibility might be1/cm.	unit="{units}"
Qdev	floating-point number	[0..1]	Estimated standard deviation of Q. (optional: see note below on usage) The unit attribute is required. See cansas1d_documentation#Rules for acceptable values. Either 1/A or 1/nm are typical.	unit="{units}"
dQw	floating-point number	[0..1]	Q resolution along the axis of scanning (the high-resolution slit width direction). Useful for defining resolution data from slit-smearing instruments such as Bonse-Hart geometry. (optional: see note below on usage) The unit attribute is required. See cansas1d_documentation#Rules for acceptable values. Either 1/A or 1/nm are typical.	unit="{units}"
dQl	floating-point number	[0..1]	Q resolution perpendicular to the axis of scanning (the low-resolution slit length direction). Useful for defining resolution data from slit-smearing instruments such as Bonse-Hart geometry. (optional: see note below on usage) The unit attribute is required. See cansas1d_documentation#Rules for acceptable values. Either 1/A or 1/nm are typical.	unit="{units}"
Qmean	floating-point number	[0..1]	Mean value of Q for this datum. Useful when describing data that has been binned from higher-resolution or from area detectors. The unit attribute is required. See cansas1d_documentation#Rules for acceptable values. Either 1/A or 1/nm are typical.	unit="{units}"
Shadowfactor	floating-point number	[0..1]	Describes the adjustment due to the beam stop penumbra. (This definition needs revision. NIST?) NOTE: There is no "unit" attribute.

Notes

1. When an optional element (Idev, Qdev, ...) is used, it must be given in every Idata within the enclosing SASdata.
2. If either dQw or dQl are used, then Qdev is not permitted to be used.