The context of this problem is described in the
forwarded message far below. I am attempting to read the
archive files using a coding model suggested in the Sockets
and internet Lab, but I am running into the following value
error which seems to occur in the verb "conn" in the script
'system\examples\socket\socklab.ijs' :
***************begin typical J session******************
load '/Users/brian/readjdata.ijs'
readdata yearmonth 5 3 15
|value error: sdgethostbyname
| 0~:s=.>{.x=. sdgethostbyname host
***************end typical J session******************
My script "readjdata.ijs" is as follows.
***************begin script******************
NB. readjdata.ijs
NB. 7/11/8
load'socket'
coinsert'socket'
require '~system\examples\socket\socklab.ijs'
months =: <;._2 ]0 : 0
January
February
March
April
May
June
July
August
September
October
November
December
)
yrsmths =: 12 12&#:
NB.* year v
NB. monad triple: start year after 2000
NB. start month (eg. April = 4)
NB. number of months
NB. year 3 4 15 is start at 2003-April and contain 15 months
year =: 2000+{.+({:{.(1&{|.(12&[EMAIL PROTECTED], 12&#)&{.)& [EMAIL PROTECTED]:)
NB.* month v
NB. monad triple: same inputs as year triple
month =: <:@(1&{) 12&|@+ [EMAIL PROTECTED]:
NB. sample usages:
NB. months{~month 3 4 15
NB. ;/@('-',.~":)@,[EMAIL PROTECTED] 3 4 15
yearmonth =: ,each/@(;/@('-',.~":)@,[EMAIL PROTECTED],:months{~month)
NB. yearmonth 3 4 15
urlhead =: <'www.jsoftware.com/pipermail/programming/'
urltail =: <'/thread.html'
readdata =: monad define
result =: i. 0
yy =. ;"1 urlhead,.y,.urltail
for_xx. yy
do.
result =. result, ".' ' taketo 'Messages: ' dropto toJ 0 webget xx
end.
)
Note 'demo'
readdata yearmonth 5 3 15
)
***************end script******************
I would appreciate help eliminating the value error
or suggestions for an alternative approach.
---------- Forwarded message ----------
Date: Thu, 10 Jul 2008 13:10:12 -0400 (EDT)
From: Brian Schott <[EMAIL PROTECTED]>
To: General forum <[EMAIL PROTECTED]>
Subject: Re: [Jgeneral] Re: Forum traffic
The link below is typical of ones I would like to
read because in produces a line for each month that gives
the number of messages for its month: "Messages: 357". So I
would like to have suggestions for how to read (at least the
first few lines) of all such files from the web as a text
file in such a way that I can extract the key line from each
into a single file for stats anaylysis. By all such files I
mean the ones that are like the following link, but for
which the yyyy-month phrase is all that differs.
http://www.jsoftware.com/pipermail/programming/2007-October/thread.html
TIA,
--
(B=)
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