soap4r and nws.noaa.gov (moving from ruby-core)

[tsuraan]

Has anyone used soap4r with the US weather service's soap server? I'm
having trouble figuring out how the array that the service uses should
map into ruby. I've tried using wsdl2ruby to convert the wsdl
automatically to a ruby class, but that doesn't even work. Also, if
this is the wrong place to be asking this (probably...), could someone
point me in the right direction? Thanks.

--jay

PS, sorry if I'm a bit incoherent. I have a really nasty cold right
now

 

[NAKAMURA, Hiroshi]

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Hi,

Sorry for late reply. I was unconscious this thread. I wrote sample
client of this weather service for another person and find this article
in Google search.

Has anyone used soap4r with the US weather service's soap server? I'm
having trouble figuring out how the array that the service uses should
map into ruby. I've tried using wsdl2ruby to convert the wsdl
automatically to a ruby class, but that doesn't even work. Also, if
this is the wrong place to be asking this (probably...), could someone
point me in the right direction? Thanks.

Here's a sample client;
http://dev.ctor.org/soap4r/file/trunk/sample/wsdl/noaa/client.rb
The sample requires the latest snapshot tarball of soap4r at
http://dev.ctor.org/download/

I don't know this service well. The sample clients above seem to access
the service correctly, but I don't know the response is right or not.
Would somebody please check this sample and let me know it works
correctly? I cannot understand the response XML. (What is dwml?) This
service seems to be somewhat popular...

Is there a XML Schema of this dwml thing? I might be able to map a
response XML to Ruby object graph using XML Schema support of soap4r,
like I once did for Yahoo's Search Web Services at
http://blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby/ruby-talk/132666

Regards,
// NaHi
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[tsuraan]

Has anyone used soap4r with the US weather service's soap server? I'm

Here's a sample client;
http://dev.ctor.org/soap4r/file/trunk/sample/wsdl/noaa/client.rb
The sample requires the latest snapshot tarball of soap4r at
http://dev.ctor.org/download/

I don't know this service well. The sample clients above seem to
access
the service correctly, but I don't know the response is right or not.
Would somebody please check this sample and let me know it works
correctly?

The problem that I had was when I set various elements to false, the
server would still send me all the data that it could. It's not really
a problem, since ignoring unwanted data isn't painful, but it's
annoying. I'd try the client out, but I'm waiting on a new motherboard
for my dev machine.

I cannot understand the response XML. (What is dwml?) This
service seems to be somewhat popular...

Is there a XML Schema of this dwml thing? I might be able to map a
response XML to Ruby object graph using XML Schema support of soap4r,
like I once did for Yahoo's Search Web Services at
http://blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby/ruby-talk/132666

A somewhat useful description of the XML response can be found at
http://weather.gov/mdl/XML/Design/MDL_XML_Design.pdf . I had something
better, but I'm not sure where it is. A document containing the "NDFD
XML Schema" is
http://products.weather.gov/PDD/Extensible_Markup_Language.pdf (See
appendix B), but I didn't find that to be very useful. Basically, if
you understand the keys it's pretty easy to convert the XML response
into something usable. I had it almost working, but then my
motherboard flaked out and killed everything on my hard drive. Stupid
computers...

--jay

 

[NAKAMURA, Hiroshi]

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Hi,

The problem that I had was when I set various elements to false, the
server would still send me all the data that it could. It's not really

Hmm. Actually the sample retrieved all data. And when I set false
instead of nil for each param, the server responses narrowed XML
document (http://dev.ctor.org/soap4r/changeset/1485). Same as ever, I
don't know the response is correct or not... Anyway, could it be the
same problem?

A somewhat useful description of the XML response can be found at
http://weather.gov/mdl/XML/Design/MDL_XML_Design.pdf . I had something
better, but I'm not sure where it is. A document containing the "NDFD
XML Schema" is
http://products.weather.gov/PDD/Extensible_Markup_Language.pdf (See
appendix B), but I didn't find that to be very useful. Basically, if
you understand the keys it's pretty easy to convert the XML response
into something usable. I had it almost working, but then my motherboard

Thank you. I'll look into this.

flaked out and killed everything on my hard drive. Stupid computers...

It's really too bad...

Regards,
// NaHi
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[NAKAMURA, Hiroshi]

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Hi again,

Thank you. I'll look into this.

Seems to be a simple XML structure as you said. Here is an example.

# To run the following code, you need to get the latest
# soap4r module from SVN repository.

Regards,
// NaHi

## preparing

t = Time.now
starter = Time.local(t.year,t.mon, t.day) + (24 *3600)
ender = starter + 7 * 24 *3600
lattitude = 39.0
longitude = -77.0

## accessing through dynamically generated driver

require 'soap/wsdlDriver'

params = {:maxt => false, :mint => false, :temp => true, :dew => true,
op12 => false, :qpf => false, :sky => false, :snow => false,
:wspd => false, :wdir => false, :wx => false, :waveh => false,
:icons => false}

wsdl = "http://weather.gov/forecasts/xml/DWMLgen/wsdl/ndfdXML.wsdl"
drv = SOAP::WSDLDriverFactory.new(wsdl).create_rpc_driver
drv.wiredump_dev = STDOUT if $DEBUG
dwml = drv.NDFDgen(lattitude, longitude, 'time-series', starter, ender,
params)
puts dwml

soap = SOAP:rocessor.unmarshal(dwml)
data = SOAP::Mapping.soap2obj(soap["data"])

data.parameters.temperature.each do |temp|
p temp.name
p temp.value
end

p data["time-layout"]["start-valid-time"]

# =>

"Temperature"
["35", "31", "39", "57", "67", "68", "58", "51", "48", "45", "51", "65",
"73", "73", "64", "54", "58", "78", "67", "57", "60", "81", "69", "57",
"58", "71", "62", "53", "55", "69", "61"]
"Dew Point Temperature"
["29", "29", "32", "30", "31", "34", "36", "38", "40", "42", "43", "43",
"43", "44", "45", "48", "49", "49", "51", "52", "52", "53", "53", "51",
"50", "49", "48", "46", "45", "44", "45"]
["2005-04-17T02:00:00-04:00", "2005-04-17T05:00:00-04:00",
"2005-04-17T08:00:00-04:00", "2005-04-17T11:00:00-04:00",
"2005-04-17T14:00:00-04:00", "2005-04-17T17:00:00-04:00",
"2005-04-17T20:00:00-04:00", "2005-04-17T23:00:00-04:00",
"2005-04-18T02:00:00-04:00", "2005-04-18T05:00:00-04:00",
"2005-04-18T08:00:00-04:00", "2005-04-18T11:00:00-04:00",
"2005-04-18T14:00:00-04:00", "2005-04-18T17:00:00-04:00",
"2005-04-18T20:00:00-04:00", "2005-04-19T02:00:00-04:00",
"2005-04-19T08:00:00-04:00", "2005-04-19T14:00:00-04:00",
"2005-04-19T20:00:00-04:00", "2005-04-20T02:00:00-04:00",
"2005-04-20T08:00:00-04:00", "2005-04-20T14:00:00-04:00",
"2005-04-20T20:00:00-04:00", "2005-04-21T02:00:00-04:00",
"2005-04-21T08:00:00-04:00", "2005-04-21T14:00:00-04:00",
"2005-04-21T20:00:00-04:00", "2005-04-22T02:00:00-04:00",
"2005-04-22T08:00:00-04:00", "2005-04-22T14:00:00-04:00",
"2005-04-22T20:00:00-04:00"]

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