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Hi Prescilla
Your email has still not posted to the list. I don't think the
formatting should be a problem. I have just put
prescillasiji@xxxxxxxxx
into the list again. For now I'll just answer your question, but
next time you have a question please try writing again to
ferret_users@xxxxxxxx, and write me again, if that doesn't work.
You asked this:
I need to calculate mean of datavalues on a slanted
line.SAMPLEXY helps to pick the data values along a slanted
line.Statistics/
brief command gives the mean value. But dont know how to assign
that mean into a variable. So that i can make a loop to calculate
mean over a number of slanted lines.
There are two answers to this. You have defined a variable,
yes? let sampled_data = SAMPLEXY(variable, xpts,
ypts)
The result is a list of values in the X direction (it can also
depend on other dimensions such as Z, as seen in the example
in the Users Guide.) You can use a transformation in the X
direction to get the mean:
yes? let sample_mean = sampled_data[x=@AVE]
The above is the best answer. It lets you make any computation on
the result of the function.
The second answer, is that once you have issued any STAT command,
the results of that are saved in symbols. Here is the output of a
variable I computed using the example in the Users Guide
yes? stat slantsalt
SAMPLEXY(SALT[X=200:300,Y=0:30],XLON,YLAT)
X: 0.5 to 50.5
Y: N/A
DEPTH (m): 0 to 5000
T: N/A
E: N/A
F: N/A
DATA SET:
/home/users/tmap/ferret/linux/fer_dsets/data/levitus_climatology.cdf
Total # of data points: 1000 (50*1*20*1*1*1)
# flagged as bad data: 174
Minimum value: 32.424
Maximum value: 35.006
Mean value: 34.435 (unweighted average)
Standard deviation: 0.3948
yes? show symbol stat*
STAT_MIN = "32.424"
STAT_MAX = "35.006"
STAT_MEAN = "34.435"
STAT_STD = "0.3948"
STAT_NGOOD = "826"
STAT_NBAD = "174"
So I can use the symbol STAT_MEAN to define a variable.
yes? let sample_mean = ($stat_mean)
Note that for this example, the mean that was computed is the
overall mean in X and Z. X is the list of sampled points, at each Z
in the original data.
Ansley
On 6/4/2016 8:17 AM, prescilla kurien
wrote:
Hi Ansley,
Both
mails to ferret are in html. I am not sure, whether ferreters
can understand my mail.I did not get any reply from anyone.
Do you
have any idea .. on mean calculation over the slanted domain
Ansley ?
Thanking
you
prescilla
"For God so loved us, He
gave His only begotten Son, "Jesus Christ"..For whoever
believeth in Him, Shall not perish.. But have the ETERNAL
LIFE (John3:16).
JESUS CHRIST paid the
price for our salvation from sin!!! and He resurrected
from death" (Holy Bible)
Hi
Prescilla,
I have gone ahead and subscribed the address pforprescy@xxxxxxxxx.
If you have another address at gmail.com, please
let me know and I can either add that too, or
change to that. The question you sent to the "ferret_users@xxxxxxxx"
address was from pforprescy@xxxxxxxxx.
I haven't seen any requests to join or bounced
queries from a gmail address recently. If you're still seeing any odd messages, send
them to me and I can ask our computer folks here
at the lab what's going on.
Ansley
On
6/2/2016 11:20 PM, pforprescy wrote:
Hi Ansley
I sent mail from Gmail. For subscription as
well as for solving my problem. I did not get
any reply yet.
Each time I got a bouncing back.
Prescilla
Sent from Samsung Mobile
-------- Original message --------
From: "Ansley C. Manke" <ansley.b.manke@xxxxxxxx>
Date: 03/06/2016 04:16 (GMT+08:00)
To: pforprescy@xxxxxxxxx
Subject: Fwd: BOUNCE ferret_users@xxxxxxxx:
Non-member submission from ["'prescilla kurien'
via _OAR PMEL Ferret Users" ]
Hi Prescilla,
(Good
question by the way - folks will be able to
help you with that).
-Ansley
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Hello Ferreters,I=C2=A0 need to calculate mean of datavalues on a slanted l=
ine.SAMPLEXY helps to pick the data values along a slanted line.Statistics/=
brief=C2=A0 command gives the mean value. But dont know how to assign that =
mean into a variable. So that i can make a loop to calculate mean over a nu=
mber of slanted lines.
Any help is greatly appreciated.Thanking youprescilla
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<html><head></head><body><div style="color:#000; background-color:#fff; font-family:verdana, helvetica, sans-serif;font-size:13px"><div id="yui_3_16_0_ym19_1_1464885192920_5481"><span id="yui_3_16_0_ym19_1_1464885192920_5503">Hello Ferreters,</span></div><div id="yui_3_16_0_ym19_1_1464885192920_5479"><div id="yui_3_16_0_ym19_1_1464885192920_5532">I need to calculate mean of datavalues on a slanted line.</div><div dir="ltr" id="yui_3_16_0_ym19_1_1464885192920_5563">SAMPLEXY helps to pick the data values along a slanted line.Statistics/brief command gives the mean value. But dont know how to assign that mean into a variable. So that i can make a loop to calculate mean over a number of slanted lines.<br></div><div id="yui_3_16_0_ym19_1_1464885192920_5666">Any help is greatly appreciated.</div><div id="yui_3_16_0_ym19_1_1464885192920_5686">Thanking you</div><div id="yui_3_16_0_ym19_1_1464885192920_5687">prescilla<br></div></div></div></body></html>
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