qvd

Description

Properties

Methods

Constants

Examples

See also

Description

The qvd object (Qub Visual Data) interfaces with QuB data files.

• File operations:
  • assign
  • isassigned
  • new
  • open
  • save
  • close
  • filename
  • listed


• Data properties:
  • segmentcount
  • datacount
  • adchannelcount
  • addatasize
  • scaling
  • sampling


• Edit operations:
  • append
  • clear
  • select
  • selectall
  • selfirst
  • sellast


• List operations:
  • addlist
  • clearlist
  • listcount
  • listindex
  • listname
  • listselfirst
  • listsellast
  • addsel
  • selcount
  • selindex


• Statistics operations:
  • average
  • min
  • max
  • minindex
  • maxindex
  • findindex


• Parameters:
  • addpar
  • delpar
  • parvalue
  • parcondvalue
  • parchannel

Properties

a = isassigned;

f = filename;

l = listed;

listed = l;

Use listed to determine whether the file is included in a multi-file analysis.

c = segmentcount;

c = datacount[(segment)];

If the segment argument is not specified, datacount returns the data count of the entire file.

c = adchannelcount;

s = addatasize;

s = scaling;

scaling = s;

s = sampling;

sampling = s;

f = selfirst;

l = sellast;

c = listcount;

i = listindex[(name = n)];

n = listname[(index = i)];

f = listselfirst[(list = l, sel = s)];

l = listsellast[(list = l, sel = s)];

c = selcount[(list = l)];

i = selindex[(list = l)];

v = parvalue({name | index});

parvalue({name | index}) = v;

v = parcondvalue({name | index});

parcondvalue({name | index}) = v;

c = parchannel({name | index});

parchannel({name | index}) = c;

Methods

assign[({name | index})];

new(filename = f, silent = si, adchannelcount = adc, addatasize = ads, sampling = s, scaling = sc);

open(filename = f, silent = si, readonly = ro, assignifopen = aio, source = src, adchannelcount = adc, addatasize = ads, sampling = s, scaling = sc, timecolumn = tc, segmented = seg);

save(filename = f, silent = si);

close(filename = n, force = f);

If filename is specified, any open file can be closed, without assign

append( source = src, newseg = ns, timecolumn = tc, segmented = seg);

clear;

select(first = f, last = l);

selectall;

addlist(name = n);

clearlist(list = {name|index});

addsel(list = l, first = f, last = l);

a = average(channel = c, first = f, last = l);

m = min(channel = c, first = f, last = l);

m = max(channel = c, first = f, last = l);

i = minindex(channel = c, first = f, last = l);

i = maxindex(channel = c, first = f, last = l);

i = findindex(channel = c, first = f, last = l, value = v);

Use findindex to find the index of the sample that is closest to value.

addpar(name);

delpar(name);

Constants

• Assign constants:
  • ASSIGN_NONE
  • ASSIGN_CURR

Examples

See also