Processing 1.0 - Processing Discourse - xmlrpclib and python server

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xmlrpclib and python server (Read 771 times)

skwwwks YaBB Newbies Offline Posts: 8	xmlrpclib and python server Dec 20^th, 2008, 1:49am I made xml-rpc server on python and I use xmlrpclib in processing as client. What processing get is python list that is processing object like this: [[0, 4, 4, 4, 4, 4, 4, 4, 5, 1, 1, 3], [0, 0, 4, 4, 4, 4, 4, 4, 5, 7, 7, 7]] How can I work with this type of object in processing ? How could it be transformed into array or vector?

PhiLho YaBB Moderator Offline Posts: 4190 Near Paris (France)	Re: xmlrpclib and python server Reply #1 - Dec 20^th, 2008, 11:50am You should avoid multiple posts... It only dilutes information and disperses answers. You should show the code on the Processing side and tell us what you send from the Python side, but I guess what you get is (already) a double array: param[][].

skwwwks

Re: xmlrpclib and python server
Reply #2 - Dec 20^th, 2008, 3:22pm

thank you for nitifications
processing code is

Object result = client.execute("sm_3x3",X);
print(result);
---
answer:
[[0, 0, 0, 0, 0, 0, 0, 0, 1, 3, 3, 3], [0, 0, 0, 0, 4, 4, 4, 4, 5, 1, 3, 7], [0, 0, 0, 0, 0, 0, 4, 4, 0, 1, 1, 1], [0, 0, 4, 4, 4, 4, 4, 4, 6, 6, 6, 6], [0, 0, 4, 4, 4, 4, 4, 4, 5, 7, 3, 3]]

if I use
Object [][] result = client.execute("sm_3x3",X);
or
int [][] result = client.execute("sm_3x3",X);
processing says "cannot convert from Object to int[][]" or "cannot convert from Object to Object[][]"

please help

PhiLho

Re: xmlrpclib and python server
Reply #3 - Dec 20^th, 2008, 6:36pm

OK, I was curious to see how this XML RPC stuff works.
So I downloaded and installed the library, made two sketches with the drawing examples. It worked.
I expanded the examples as follow:
Server: Code:

public Vector update(int x, int y)
{
// Same code...

  Vector vv = new Vector();
  Vector v1 = new Vector();
  Vector v2 = new Vector();
  v1.add(x); v1.add(y);
  v2.add(this.x); v2.add(this.y);
  vv.add(v1); vv.add(v2);
  return vv;
}

Client: Code:

void keyPressed()
{
// Same code...


  Object o = client.execute("testserver.update", go);
  println(o.getClass().getName() + ": " + o);
}

I got an output similar to your (just with less values).
This should push you in the right direction: you can access the data with Vector v = (Vector) o;

skwwwks YaBB Newbies Offline Posts: 8	Re: xmlrpclib and python server Reply #4 - Dec 20^th, 2008, 11:56pm I tried Vector v = (Vector) o; and now I see the light at the end of tunnel But println (v[0]); as well as println (v[0][0]); gives `the type of the experssion must be an array but it resolved to Vector' I am novice in processing and i will thank you for any suggestion how to access this data

PhiLho YaBB Moderator Offline Posts: 4190 Near Paris (France)	Re: xmlrpclib and python server Reply #5 - Dec 21^st, 2008, 9:45am See Vector reference: Code: Object o = client.execute("testserver.update", go); Vector v = (Vector) o; Vector v1 = (Vector) v.get(1); println(o.getClass().getName() + ": " + o + " > " + v.get(1) + " > " + v1.get(0));

skwwwks

Re: xmlrpclib and python server
Reply #6 - Dec 21^st, 2008, 2:38pm

I made server on python to visualize data using processing, and now I can access python data. But it is still Object, for example:
int L1 = (int) v1.get(5);
says "Cannot cast from Object ti int"
(The method line(float,float,float,float) in the type PApplet is not applicable for the arguments(Object))

This question is now solved at http://processing.org/discourse/yabb_beta/YaBB.cgi?board=Syntax;action=display;num=1230029675;start=0#4

Thank you very much for consultation in new and powerful language that processing is.

« Last Edit: Dec 24^th, 2008, 6:18am by skwwwks »

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