jeromq is a Java implementation of libzmq. I have a .jar file created from the jeromq source. However, I'm unable to call a class in jeromq from MATLAB. I've used addjavaclasspath and addjavalibrarypath but am still not able to get it working. Does anyone have a simple working example in MATLAB?
I've added the answer here as for reference in case anyone else is interested.
% Author : Dheepak Krishnamurthy
% License : BSD 3 Clause
import org.zeromq.ZMQ;
ctx = zmq.Ctx();
socket = ctx.createSocket(ZMQ.REP);
socket.bind('tcp://127.0.0.1:7575');
message = socket.recv(0);
json_data = native2unicode(message.data)';
message = zmq.Msg(8);
message.put(unicode2native('Received'));
socket.send(message, 0);
socket.close()
My Matlab 9.0.0.341360 (R2016a) wanted the following code instead of import above:
javaclasspath('/path/to/jar/jeromq-0.4.3-SNAPSHOT.jar')
import org.zeromq.*
The rest worked fine.
Here is what I had to do to get things working.
javaclasspath('jeromq-0.5.1.jar')
import org.zeromq.*;
%subscribe to ZMQ feed
context = ZContext();
socket = context.createSocket(ZMQ.SUB);
success = false;
while(~success)
success = socket.connect('tcp://127.0.0.1:5996');
end
socket.subscribe("");
socket.setTCPKeepAlive(1);
%receive a message
message = socket.recv(0); %nonblocking receive uses argument (1)
%when done
socket.close();
Related
I am trying to copy a tutorial for a Wordle solving bot but its just not going well. whenever I try to run a test on the code it doesn't work at certain points, I'll either get 'Uncaught SyntaxError: Unexpected identifier'. I'm doing this on UIlicious.
Here's what I've got so far:
I.goTo("https://www.powerlanguage.co.uk/wordle/")
I.click("reject")
I.see("Guess the Wordle")
I.click('/html/body', 40, 80)
let guessWord = null
for(Let r=0 ; r<6 ; ++r) {
guessWord = solver.suggestWord(gameState)
I.type(guessWord);
I.pressEnter()
I.wait(2)
}
let rowList = document.querySelector("game-app").shadowRoot. //
querySelector("game-theme-manager"). //
querySelector("#board").querySelectorAll("game-row");
you are probably referring to the article I wrote here : https://uilicious.com/blog/automate-wordle-via-uilicious/
This test script, is designed specifically to use uilicious.com, so you will need to edit and run it through the platform.
You can do so via the snippet here : https://snippet.uilicious.com/test/public/N5qZKraAaBsAgFuSN8wxCL
If you have syntax error there, do let me know with a snippet link - and I will try to help you respectively.
Also the snippet you provided so far, excludes the "solver" class which was initialised much further down.
I am working on a deep learning project in Fastai and wish to use EarlyStoppingCallback with ReduceLROnPlateauCallback in it. Read callbacks.fastai but struggling to understand how to implement both and couldn't find any relevant example. Any help would be appreciated.
learn = cnn_learner(data, models.resnet50, metrics = [accuracy,quadratic_kappa])
learn.fit(50,2e-6)
The way I normally do it is this way....
First create the learner Object
learn = Learner(data,
model,
loss_func=....,
opt_func=....,
metrics=..... )
learn.unfreeze()
Then you call any callbacks on your fit_one_cycle
learn.fit_one_cycle(16,
max_lr=1e-3,
div_factor=100,
pct_start=0.0,
callbacks = [SaveModelCallback(learn,
name=f'model',monitor='kappa_score')])
maybe you can also do like this-:
from fastai.callbacks import *
from fastai.callback import Callback
from fastai.vision import partial
learner = cnn_learner(data, models.resnet50, metrics=[accuracy], pretrained=True, callback_fns=[partial(EarlyStoppingCallback, monitor='valid_loss', min_delta=0.01, patience=3)])
# or
learner = cnn_learner(data, models.resnet101, metrics=[accuracy], pretrained=True, callbacks=EarlyStoppingCallback(monitor='valid_loss', min_delta=0.01, patience=3))
learner.fit(150)
# it will stop if "valid_loss" will not decrease (patience=3)
I know there are similar questions out there, but this one is a little different (I think).
I used the MATLAB Compiler to convert a .m to an Excel add-in. When I run the add-in on my machine, it works just fine. When I send it to a colleague, they get the "ActiveX component can't create object" error. They have added the add-in no problem.
Is there something going on here that's easily fixed?
MATLAB code:
function mess = createAndRouteOrderWithStyle()
c = startbbrg();
[num,text] = exportToM();
s = emsx('//blp/emapisvc_beta');
order.EMSX_ORDER_TYPE = text(1);
order.EMSX_SIDE = text(2);
order.EMSX_TICKER = text(3);
order.EMSX_AMOUNT = int32(num(1));
%order.EMSX_LIMIT_PRICE = num(2);
order.EMSX_BROKER = text(4);
order.EMSX_HAND_INSTRUCTION = text(5);
order.EMSX_TIF = text(6);
events = createOrderAndRoute(s,order);
mess = events.ERROR_MESSAGE;
close(s);
end
Excel VBA code:
Sub GO()
Cells(10,10).Formula = "=createAndRouteOrderWithStyle()"
End Sub
I am trying to convert a simple program that uses "Presentation" (from reportgen package) to a .exe.
The code is as follows:
makePPTCompilable();
import mlreportgen.ppt.*
slides = Presentation('mySlideAddPresentation.pptx');
slide1 = add(slides,'Title and Picture');
plane = Picture(which('tulips.jpg'));
plane.X = '4in';
plane.Y = '4in';
plane.Width = '5in';
plane.Height = '2in';
add(slide1,plane);
close(slides);
I get the following error on running the complied version:
" Undefined function 'Presentation' for input arguments of type 'char'"
Any idea what I am missing here?I am on 2015b, used the following link for help: https://www.mathworks.com/help/rptgen/ug/compile-a-presentation-program.html
You need to make the reportgen compilable, see here and here
In my code I put:
if ismcc || isdeployed
% Make sure DOM is compilable
makeDOMCompilable()
end
Then it compiles fine! :)
I wrote a program communicated with sockets.But I don't know why they don't work.
Server Code:
this.serverSocket = new ServerSocket(ServerConnector.port);
this.socketListener = this.serverSocket.accept();
System.out.println(this.socketListener.getPort());
this.objIn = new ObjectInputStream(this.socketListener.getInputStream());
System.out.println("1");
this.objOut = new ObjectOutputStream(this.socketListener.getOutputStream());
System.out.println("1");
this.objOut.writeInt(19999);
System.out.println("1");
this.objOut.writeObject(new Date());
System.out.println("1");
Client Code:
this.clientSocket = new Socket(ClientConnector.host, ClientConnector.port);
System.out.println(this.clientSocket.getPort());
this.objIn = new ObjectInputStream(this.clientSocket.getInputStream());
System.out.println("1");
this.objOut = new ObjectOutputStream(this.clientSocket.getOutputStream());
System.out.println("1");
int i = (Integer) this.objIn.readInt();
System.out.println(i);
Date date = (Date) this.objIn.readObject();
The truth is, they don't show any information I suggested to pass through(19999 and date), they even can't print a line of "1"(I added for testing). It means even the line below can't work normally. I really confused by these, who can figure the error out?
this.objIn = new ObjectInputStream(this.clientSocket.getInputStream());
You are most likely experiencing the effect of Nagle's Algorithm. which tries to optimize packet sending in TCP. If you want to send your data immediately you need to disable it using the setTcpNoDelay method on the socket interface.
P.S. no idea why the question is tag'ed as osgi, as it has no relevance to OSGi at all.