# 3.3.2.17. NXsqom¶

**Status**:

application definition, extends NXobject

**Description**:

This is the application definition for S(Q,OM) processed data.

As this kind of data is in general not on a rectangular grid after data reduction, it is stored as Q,E positions plus their intensity, table like. It is the task of a possible visualisation program to regrid this data in a sensible way.

**Symbols**:

The symbol(s) listed here will be used below to coordinate datasets with the same shape.

nP: Number of points

**Groups cited**:NXdata, NXentry, NXinstrument, NXparameters, NXprocess, NXsample, NXsource

**Structure**:

ENTRY: (required) NXentry

@entry: (required) NX_CHAR

title: (required) NX_CHAR

definition: (required) NX_CHAROfficial NeXus NXDL schema to which this file conforms

Obligatory value:

`NXsqom`

instrument: (required) NXinstrument

SAMPLE: (required) NXsample

name: (required) NX_CHARDescriptive name of sample

reduction: (required) NXprocess

program: (required) NX_CHAR

version: (required) NX_CHAR

input: (required) NXparametersInput parameters for the reduction program used

filenames: (required) NX_CHARRaw data files used to generate this I(Q)

output: (required) NXparametersEventual output parameters from the data reduction program used

DATA: (required) NXdata

data: (required) NX_INT (Rank: 1, Dimensions: [nP])This is the intensity for each point in QE

qx: (required) NX_NUMBER (Rank: 1, Dimensions: [nP]) {units=NX_WAVENUMBER}Positions for the first dimension of Q

qy: (required) NX_NUMBER (Rank: 1, Dimensions: [nP]) {units=NX_WAVENUMBER}Positions for the the second dimension of Q

qz: (required) NX_NUMBER (Rank: 1, Dimensions: [nP]) {units=NX_WAVENUMBER}Positions for the the third dimension of Q

en: (required) NX_FLOAT (Rank: 1, Dimensions: [nP]) {units=NX_ENERGY}Values for the energy transfer for each point

## Hypertext Anchors¶

List of hypertext anchors for all groups, fields, attributes, and links defined in this class.