Hi list
I searched the list and google, but couldn't find a way to solve my pbm.
I have data stored in a list (from an sql query) , with these "columns":
x = time serie in hours
y = some level value
There are some missing values : eg between 08:33 and 08:40.
Here is my code :
sqla="SELECT * FROM import_parcelle a WHERE dat_loc='" + date_traite
+ "' AND code_uc='" + code_uc + "' ORDER BY a.heu_loc ;"
resa=db.query(sqla)
data=resa.dictresult()
#x = time serie
x= [ datetime.datetime(*time.strptime(a["dat_loc"]+"
"+a["heu_loc"],'%Y-%m-%d %H:%M:%S')[0:6] ) for a in data]
#y5 = tank level
y5= [float(a["niv_cuv"]) for a in data] # --> extraction de la
colonne y1
figure()
# the plot command with no mask
plot_date(x,y5,color='b',linestyle='None',marker='',xdate=True,ydate=False)
#the mask
#ym5 = ma.masked_where(y5 <300, y5)
#plot_date(x,ym5,color='r',linestyle='-',xdate=True,ydate=False)
#the filling under the curve
xs, ys = poly_between(x, 0, y5)
fill(xs,ys)
Here is the result:
http://michaeldouchin.free.fr/17_2007-06-07_10B_vitesse.png
As you see, I commented the lines with the mask, because it did not
change anything
To see what I am looking for, here is the result under R (a statistical
tool)
http://michaeldouchin.free.fr/17_2007-06-07_10B_vitesse.jpg
As you see, between 08:48 and 08:50 (for example), there is a gap,
showing we have no data for this interval.
As I want to automatically draw this graph for different set of data, I
can't look each set in detail.
I tried to folow the example masked_demo.py, but I could not adapt it to
my case....
Any hint ?
Thanks very much in advance
Michael
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