Open Data

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This dialog is shown when QuB needs to know more about the structure of a data file you're opening. Some fields may be filled in if QuB can read them from the file, but it's up to you to make sure they're correct.

See also: How to import data

A/D Channel count

Number of A/D channels in the file

for text files with a time column, it's (number of columns - 1)

Scaling

see Data Theory#Choosing a Scaling value

Sampling

the number of points per second in the file. It can be specified in [kHz] (10 kHz = 10000 samples per second) or in [ms] (milliseconds per sample). Changing either the [kHz] or [ms] value will also update the other value

A/D Data size

for integer data, the size of each sample in the file

for text data, the size QuB should use to represent each sample; 2 is traditional; 4 trades improved dynamic range for larger temp-file size

Time column

for text files, check if the first column has time references

Segmented

for text files, interprets blank lines as breaks between data segments

Uneven

for text files with a time column, when the time references aren't exact multiples of the sampling rate

resamples the data by interpolation

Float (single)

for binary data, whether the data is stored as integers or (4-byte) floating point

Est Scaling

Reads through the file (all or just the beginning?) to find the largest value, then sets Scaling to accommodate it

Presets

Fills in the fields of this dialog from a preset, or creates a new preset

Prev: New Data

Outline

Next: Data Properties