How to run two function from same resource(plot graphic and saving infinite data to txt file)
I'm new in Python, try to develop gui app. My data source is from serial port. When i pressed buttons, it should plot graphics and print it on the screen and print to new txt file.
All of above that i mentioned should do separetely.
My expected is: How can i run both saving data and plotting many graphics concurrently from same resource
I used threading, time.sleep, wx.Timer. but I couldn't succeed on it. Anybody can help me? Thanks a lot.
python multithreading serial-port wxpython pyserial
asked Dec 28 '18 at 11:10
gcsgcs
33
add a comment |
I'm new in Python, try to develop gui app. My data source is from serial port. When i pressed buttons, it should plot graphics and print it on the screen and print to new txt file.
All of above that i mentioned should do separetely.
My expected is: How can i run both saving data and plotting many graphics concurrently from same resource
I used threading, time.sleep, wx.Timer. but I couldn't succeed on it. Anybody can help me? Thanks a lot.
python multithreading serial-port wxpython pyserial
asked Dec 28 '18 at 11:10
gcsgcs
33
1
Welcome to SO! Please provide your code so that users can help you , see e.g. stackoverflow.com/help/mcve. See also stackoverflow.com/help/how-to-ask how to ask good questions.
– dr0i
Dec 28 '18 at 14:07
When reading from a serial port the data is effectively consumed by that process. That process will have to plotandwrite to the text file or plot and store or pass on data for another process to write the text file. You cannot have 2 processes reading the same data from the serial port.
– Rolf of Saxony
Dec 31 '18 at 9:42
add a comment |
I'm new in Python, try to develop gui app. My data source is from serial port. When i pressed buttons, it should plot graphics and print it on the screen and print to new txt file.
All of above that i mentioned should do separetely.
My expected is: How can i run both saving data and plotting many graphics concurrently from same resource
I used threading, time.sleep, wx.Timer. but I couldn't succeed on it. Anybody can help me? Thanks a lot.
python multithreading serial-port wxpython pyserial
asked Dec 28 '18 at 11:10
gcsgcs
33
I'm new in Python, try to develop gui app. My data source is from serial port. When i pressed buttons, it should plot graphics and print it on the screen and print to new txt file.
All of above that i mentioned should do separetely.
My expected is: How can i run both saving data and plotting many graphics concurrently from same resource
I used threading, time.sleep, wx.Timer. but I couldn't succeed on it. Anybody can help me? Thanks a lot.
python multithreading serial-port wxpython pyserial
python multithreading serial-port wxpython pyserial
asked Dec 28 '18 at 11:10
gcsgcs
33
asked Dec 28 '18 at 11:10
gcsgcs
33
edited Jan 4 at 5:24
gcs
asked Dec 28 '18 at 11:10
gcsgcs
33
asked Dec 28 '18 at 11:10
gcsgcs
33
asked Dec 28 '18 at 11:10
gcsgcs
33
33
1
Welcome to SO! Please provide your code so that users can help you , see e.g. stackoverflow.com/help/mcve. See also stackoverflow.com/help/how-to-ask how to ask good questions.
– dr0i
Dec 28 '18 at 14:07
When reading from a serial port the data is effectively consumed by that process. That process will have to plotandwrite to the text file or plot and store or pass on data for another process to write the text file. You cannot have 2 processes reading the same data from the serial port.
– Rolf of Saxony
Dec 31 '18 at 9:42
add a comment |
1
Welcome to SO! Please provide your code so that users can help you , see e.g. stackoverflow.com/help/mcve. See also stackoverflow.com/help/how-to-ask how to ask good questions.
– dr0i
Dec 28 '18 at 14:07
When reading from a serial port the data is effectively consumed by that process. That process will have to plotandwrite to the text file or plot and store or pass on data for another process to write the text file. You cannot have 2 processes reading the same data from the serial port.
– Rolf of Saxony
Dec 31 '18 at 9:42
1
1
Welcome to SO! Please provide your code so that users can help you , see e.g. stackoverflow.com/help/mcve. See also stackoverflow.com/help/how-to-ask how to ask good questions.
– dr0i
Dec 28 '18 at 14:07
Welcome to SO! Please provide your code so that users can help you , see e.g. stackoverflow.com/help/mcve. See also stackoverflow.com/help/how-to-ask how to ask good questions.
– dr0i
Dec 28 '18 at 14:07
When reading from a serial port the data is effectively consumed by that process. That process will have to plot
and write to the text file or plot and store or pass on data for another process to write the text file. You cannot have 2 processes reading the same data from the serial port.– Rolf of Saxony
Dec 31 '18 at 9:42
When reading from a serial port the data is effectively consumed by that process. That process will have to plot
and write to the text file or plot and store or pass on data for another process to write the text file. You cannot have 2 processes reading the same data from the serial port.– Rolf of Saxony
Dec 31 '18 at 9:42
add a comment |
1 Answer
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You can certainly use a wx.Timer event to fetch the latest data from the serial port. With that data, you can stream it to an open file and update a graph of the data.
Without a more detailed question, it's hard to give a detailed answer. But, you may find the wxmplot library (https://newville.github.io/wxmplot/) useful. In fairness, I am the lead author of that library. One of its features I use it for is very similar to your need: "live updated plots" of data from an external source, and without recreating a new matplotlib figure for each new data set.
You might find the example at https://github.com/newville/wxmplot/blob/master/examples/stripchart.py to be a useful example. It has a function that simulates data, but you can replace this with "read from serial port" or fetching other data sources.
answered Dec 31 '18 at 17:07
M NewvilleM Newville
2,8532719
Is wx.Timer enough, or should i use threading also?
– gcs
Jan 4 at 5:34
that is a separate question and a longer topic. A wx.Timer is good enough if the data comes predictably and quickly, as is the case for the example I linked to. You may want to use threads or other mechanisms if i/o is slow, which it might be for data from a serial port. I'd recommend starting with just wx.Timer and see if it is good enough.
– M Newville
Jan 4 at 14:54
The data comes every second. I skipped that problem and now i stuck with new one. The problem is my program run for 2 minutes then it give 'stack overflow' error. I append my infinite data to list and delete it after plotting, using wx.Timer. I dont know why it gave that error.
– gcs
2 days ago
as earlier, that is a completely different question. It cannot be addressed in comments to an answer. If data comes every second, you should not fill memory in two minutes. Please post a complete example and the complete traceback you get as a separate question.
– M Newville
2 days ago
add a comment |
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You can certainly use a wx.Timer event to fetch the latest data from the serial port. With that data, you can stream it to an open file and update a graph of the data.
Without a more detailed question, it's hard to give a detailed answer. But, you may find the wxmplot library (https://newville.github.io/wxmplot/) useful. In fairness, I am the lead author of that library. One of its features I use it for is very similar to your need: "live updated plots" of data from an external source, and without recreating a new matplotlib figure for each new data set.
You might find the example at https://github.com/newville/wxmplot/blob/master/examples/stripchart.py to be a useful example. It has a function that simulates data, but you can replace this with "read from serial port" or fetching other data sources.
answered Dec 31 '18 at 17:07
M NewvilleM Newville
2,8532719
Is wx.Timer enough, or should i use threading also?
– gcs
Jan 4 at 5:34
that is a separate question and a longer topic. A wx.Timer is good enough if the data comes predictably and quickly, as is the case for the example I linked to. You may want to use threads or other mechanisms if i/o is slow, which it might be for data from a serial port. I'd recommend starting with just wx.Timer and see if it is good enough.
– M Newville
Jan 4 at 14:54
The data comes every second. I skipped that problem and now i stuck with new one. The problem is my program run for 2 minutes then it give 'stack overflow' error. I append my infinite data to list and delete it after plotting, using wx.Timer. I dont know why it gave that error.
– gcs
2 days ago
as earlier, that is a completely different question. It cannot be addressed in comments to an answer. If data comes every second, you should not fill memory in two minutes. Please post a complete example and the complete traceback you get as a separate question.
– M Newville
2 days ago
add a comment |
You can certainly use a wx.Timer event to fetch the latest data from the serial port. With that data, you can stream it to an open file and update a graph of the data.
Without a more detailed question, it's hard to give a detailed answer. But, you may find the wxmplot library (https://newville.github.io/wxmplot/) useful. In fairness, I am the lead author of that library. One of its features I use it for is very similar to your need: "live updated plots" of data from an external source, and without recreating a new matplotlib figure for each new data set.
You might find the example at https://github.com/newville/wxmplot/blob/master/examples/stripchart.py to be a useful example. It has a function that simulates data, but you can replace this with "read from serial port" or fetching other data sources.
answered Dec 31 '18 at 17:07
M NewvilleM Newville
2,8532719
Is wx.Timer enough, or should i use threading also?
– gcs
Jan 4 at 5:34
that is a separate question and a longer topic. A wx.Timer is good enough if the data comes predictably and quickly, as is the case for the example I linked to. You may want to use threads or other mechanisms if i/o is slow, which it might be for data from a serial port. I'd recommend starting with just wx.Timer and see if it is good enough.
– M Newville
Jan 4 at 14:54
The data comes every second. I skipped that problem and now i stuck with new one. The problem is my program run for 2 minutes then it give 'stack overflow' error. I append my infinite data to list and delete it after plotting, using wx.Timer. I dont know why it gave that error.
– gcs
2 days ago
as earlier, that is a completely different question. It cannot be addressed in comments to an answer. If data comes every second, you should not fill memory in two minutes. Please post a complete example and the complete traceback you get as a separate question.
– M Newville
2 days ago
add a comment |
You can certainly use a wx.Timer event to fetch the latest data from the serial port. With that data, you can stream it to an open file and update a graph of the data.
Without a more detailed question, it's hard to give a detailed answer. But, you may find the wxmplot library (https://newville.github.io/wxmplot/) useful. In fairness, I am the lead author of that library. One of its features I use it for is very similar to your need: "live updated plots" of data from an external source, and without recreating a new matplotlib figure for each new data set.
You might find the example at https://github.com/newville/wxmplot/blob/master/examples/stripchart.py to be a useful example. It has a function that simulates data, but you can replace this with "read from serial port" or fetching other data sources.
answered Dec 31 '18 at 17:07
M NewvilleM Newville
2,8532719
You can certainly use a wx.Timer event to fetch the latest data from the serial port. With that data, you can stream it to an open file and update a graph of the data.
Without a more detailed question, it's hard to give a detailed answer. But, you may find the wxmplot library (https://newville.github.io/wxmplot/) useful. In fairness, I am the lead author of that library. One of its features I use it for is very similar to your need: "live updated plots" of data from an external source, and without recreating a new matplotlib figure for each new data set.
You might find the example at https://github.com/newville/wxmplot/blob/master/examples/stripchart.py to be a useful example. It has a function that simulates data, but you can replace this with "read from serial port" or fetching other data sources.
answered Dec 31 '18 at 17:07
M NewvilleM Newville
2,8532719
answered Dec 31 '18 at 17:07
M NewvilleM Newville
2,8532719
answered Dec 31 '18 at 17:07
M NewvilleM Newville
2,8532719
answered Dec 31 '18 at 17:07
M NewvilleM Newville
2,8532719
2,8532719
Is wx.Timer enough, or should i use threading also?
– gcs
Jan 4 at 5:34
that is a separate question and a longer topic. A wx.Timer is good enough if the data comes predictably and quickly, as is the case for the example I linked to. You may want to use threads or other mechanisms if i/o is slow, which it might be for data from a serial port. I'd recommend starting with just wx.Timer and see if it is good enough.
– M Newville
Jan 4 at 14:54
The data comes every second. I skipped that problem and now i stuck with new one. The problem is my program run for 2 minutes then it give 'stack overflow' error. I append my infinite data to list and delete it after plotting, using wx.Timer. I dont know why it gave that error.
– gcs
2 days ago
as earlier, that is a completely different question. It cannot be addressed in comments to an answer. If data comes every second, you should not fill memory in two minutes. Please post a complete example and the complete traceback you get as a separate question.
– M Newville
2 days ago
add a comment |
Is wx.Timer enough, or should i use threading also?
– gcs
Jan 4 at 5:34
that is a separate question and a longer topic. A wx.Timer is good enough if the data comes predictably and quickly, as is the case for the example I linked to. You may want to use threads or other mechanisms if i/o is slow, which it might be for data from a serial port. I'd recommend starting with just wx.Timer and see if it is good enough.
– M Newville
Jan 4 at 14:54
The data comes every second. I skipped that problem and now i stuck with new one. The problem is my program run for 2 minutes then it give 'stack overflow' error. I append my infinite data to list and delete it after plotting, using wx.Timer. I dont know why it gave that error.
– gcs
2 days ago
as earlier, that is a completely different question. It cannot be addressed in comments to an answer. If data comes every second, you should not fill memory in two minutes. Please post a complete example and the complete traceback you get as a separate question.
– M Newville
2 days ago
Is wx.Timer enough, or should i use threading also?
– gcs
Jan 4 at 5:34
Is wx.Timer enough, or should i use threading also?
– gcs
Jan 4 at 5:34
that is a separate question and a longer topic. A wx.Timer is good enough if the data comes predictably and quickly, as is the case for the example I linked to. You may want to use threads or other mechanisms if i/o is slow, which it might be for data from a serial port. I'd recommend starting with just wx.Timer and see if it is good enough.
– M Newville
Jan 4 at 14:54
that is a separate question and a longer topic. A wx.Timer is good enough if the data comes predictably and quickly, as is the case for the example I linked to. You may want to use threads or other mechanisms if i/o is slow, which it might be for data from a serial port. I'd recommend starting with just wx.Timer and see if it is good enough.
– M Newville
Jan 4 at 14:54
The data comes every second. I skipped that problem and now i stuck with new one. The problem is my program run for 2 minutes then it give 'stack overflow' error. I append my infinite data to list and delete it after plotting, using wx.Timer. I dont know why it gave that error.
– gcs
2 days ago
The data comes every second. I skipped that problem and now i stuck with new one. The problem is my program run for 2 minutes then it give 'stack overflow' error. I append my infinite data to list and delete it after plotting, using wx.Timer. I dont know why it gave that error.
– gcs
2 days ago
as earlier, that is a completely different question. It cannot be addressed in comments to an answer. If data comes every second, you should not fill memory in two minutes. Please post a complete example and the complete traceback you get as a separate question.
– M Newville
2 days ago
as earlier, that is a completely different question. It cannot be addressed in comments to an answer. If data comes every second, you should not fill memory in two minutes. Please post a complete example and the complete traceback you get as a separate question.
– M Newville
2 days ago
add a comment |
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Welcome to SO! Please provide your code so that users can help you , see e.g. stackoverflow.com/help/mcve. See also stackoverflow.com/help/how-to-ask how to ask good questions.
– dr0i
Dec 28 '18 at 14:07
When reading from a serial port the data is effectively consumed by that process. That process will have to plot
andwrite to the text file or plot and store or pass on data for another process to write the text file. You cannot have 2 processes reading the same data from the serial port.– Rolf of Saxony
Dec 31 '18 at 9:42