| Help w/Plotting [message #15800] |
Fri, 11 June 1999 00:00  |
akk
Messages: 10
Registered: July 1998
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Junior Member |
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Hi,
I have a graph of measurements vs time. Both my MeasurementArray and
TimeArray have 55924 elememts
with measurements taken on the hour for 8 years (1973-1980). I would
also like to
indicate on the xaxis the years as they correspond to the time (i.e. After
the first
year's of data have 1973 on the x axis and so on)
However I am having some trouble
figuring out how to do this. I have tried using the axis prodeure and
graphing:
YearsArray = [1973, 1974, 1975, 1976, 1977, 1978, 1979, 1980]
Plot, TimeArray, MeasurementAray
axis, xaxis = 0,xticks = 7,xtickn = YearsArray, xtitle =
'Yr',xcharsize = 0.9
However, since measurents were only first collected in October 1973,
dividing the xaxis
into 8 even parts would not accurately relate the years to the
Measurments.
I also tried creating another array TimeArrayNew which has the year
markers (i.e. 1973, 1974 etc)
placed in the corresponding time slots:
YearsArray = [1973, 1974, 1975, 1976, 1977, 1978, 1979, 1980]
YearIndex = where(TimeArray GT 365.86 and TimeArray LT 365.9,
count)
print, 'Count: ', count
NumElem = n_elements(Final_Time)
TimeArrayNew = intarr(NumElem) ; Initialize Array of size NUmElem
to ZERO
TimeArrayNew(YearIndex) = YearsArray
Plot, TimeArray, MeasurementAray
axis, xaxis = 0, xticks = NumElem-1 ,xtickn = TimeArrayNew, xtitle
= 'Yr',xcharsize = 0.9
Note: NumElem equals 55924
However this yields as an error b/c XTICKN can only have 60 elements:
ERROR: %Keyword array parameter XTICKNAME must have from 1 to 60 elements.
I'm looking for suggestions on can plot the measurements vs time while
also indicating the
corresponding Years along the X Axis:
Thanks
(please reply to my email address)
p.s. Also could someone suggest a good IDL website for beginners
anilk@mtolympus.ari.net
"Internet or BUST !!"
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