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No Lines between points when plotting on ThingSpeak (Example ThingSpeak Code)
It is very likely that your data has NaN's in them. You can remove the missing entries using the RMMISSING function before plott...

7年以上前 | 1

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thingSpeakPlot vs time of day.
Hi Mark, Can you use plot instead of thingSpeakPlot? Does that resovle the problem? -Vinod

7年以上前 | 0

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Can anyone sign up in Thingspeak
Yes. If you have an existing MathWorks Account, you can sign in to ThingSpeak using that account's credentials. If you do not h...

7年以上前 | 0

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Is it possible to use a replacement key in a thinghttp header field?
You will need to do this using a MATLAB Analysis app. If you want to schedule it, you can schedule the MATLAB Analysis using the...

7年以上前 | 0

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Is it possible to visualize the 1. derivation of a first curve as a separate second curve in the free of charge Thingspeak? I want to detect high value changes in the first curve.
You can always plot(diff(array)) where array contains the data you read from a ThingSpeak channel using thingSpeakRead.

7年以上前 | 0

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how do I extract data from a single field at 12 hour intervals without hitting the 8000 datapoint limit?
Allan, Can you describe your use case and application in further detail? How will this data that is older than the most recen...

約8年前 | 1

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ThingSpeak Channel Status Update field
Have you enabled the "Show Status" checkbox on the channel setting page? If so, you should see "good" in your channel status w...

8年以上前 | 0

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Error using thingSpeakWrite 'Values' must have a maximum of 8 elements.
Can you share the code you are using to update your ThingSpeak channel? Please replace your ThingSpeak API key with ___XXX___ so...

8年以上前 | 0

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Re-posed this question
Could you help me understand why almost every one of your posts tagged with "Statistics and Machine Learning Toolbox" and "Data ...

8年以上前 | 0

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Upload files to your DropBox folder from MATLAB
This function allows a user to upload files using MATLAB to DropBox(TM).

8年以上前 | ダウンロード 1109 件 |

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Example Image and Video Channel

9年弱前

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How to capture a spectrum from a R&S spectrum analyzer?
See answer to the <https://www.mathworks.com/matlabcentral/answers/337575 question here> .

約9年前 | 0

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Controlling an SCPI instrument in Simulink
Perhaps you can use the Simulink <https://www.mathworks.com/help/simulink/slref/whileiterator.html While Iterator> to run a subs...

約9年前 | 0

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How to connect to Keysight oscilloscope using the oscilloscope() function?
Try >> o=oscilloscope; >> o.Reource = 'USB0::0x2A8D::0x1769::MY56310266::INSTR' >> o.Driver = 'AgInfiniiVision' >>...

9年以上前 | 0

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Instrument control toolbox error when creating interface object
Install <https://www.mathworks.com/matlabcentral/fileexchange/52848 this support package> and try again. If you are still seeing...

9年以上前 | 0

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How to capture a spectrum from a R&S spectrum analyzer and find its maximum?
You could start by modifying <https://www.mathworks.com/help/instrument/examples/reading-inphase-and-quadrature-iq-data-from-a-s...

9年以上前 | 0

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Invalid MEX file error while running CAN communication demo
I suspect you don't have your software installed correctly. Specifically I suspect you need to install the Hardware Support Pac...

9年以上前 | 0

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I have an agilent 1002A oscilloscope.It is provided with an USB Port So how can i interface it with MATLAB
You should be able to modify this example with the SCPI commands for your oscilloscope: https://www.mathworks.com/matlabcentr...

9年以上前 | 0

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DAQ.getdevices works in MATLAB 2015?
According to the <https://www.mathworks.com/help/daq/ref/daq.getdevices.html documentation page>, the function was introduced in...

9年以上前 | 0

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How does the DAQ demo adaptor work?
The demo adaptor contains all the source code to add support for any device you wish in Data Acquisition Toolbox. The source cod...

9年以上前 | 0

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So what is the alternative to Data Acquisition Toolbox in all 64bit setup?
Support for Data Acquisition using Simulink from NI hardware is available in the latest version of MATLAB & Simulink. What versi...

9年以上前 | 0

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questions about bytesavailablefcncount of a serial port.
Behind the scenes, MATLAB is continuously polling the serial port for data and storing the results in a local buffer. The ...

9年以上前 | 2

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VISA Serial Read - Unsuccessful read: A timeout occurred before the Terminator was reached.
What you are seeing is normal. Please check the <https://www.mathworks.com/help/instrument/fscanf.html Rules for completing a re...

9年以上前 | 1

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Can I communicate through Modbus protocol from MATLAB/Simulink?
Instrument Control Toolbox added support for MODBUS in R2017a. Take a look at the functionality documented here.

9年以上前 | 1

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how to send SCPI command with driver based communication?
This depends on a number of things, but mainly if/how the driver and the hardware implement device locking. You can try this - w...

9年以上前 | 0

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How can I receive UDP broadcast data in MATLAB using Instrument Control Toolbox?
Here's a file exchange example that shows you how you can broadcast and receive messages over UDP.

10年弱前 | 0

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How to implement a TCP/IP connection to Lego Mindstroms EV3 hardware?
Are you sure you really want to do it at that low level? Perhaps the <https://www.mathworks.com/hardware-support/lego-mindst...

10年弱前 | 1

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Multiple DAQ Sessions in Background
You can have multiple DAQ sessions with different devices, just not multiple sessions with the same device. In your applicati...

10年弱前 | 1

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Bitalino device not detected by Bitalino support package
Have you changed the bitalino's friendly name from 'bitalino' to something else? The default constructor assumes that the Bitali...

10年弱前 | 0

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How to capture real time data using Tektronix oscilloscope?
There is a <https://www.mathworks.com/help/instrument/using-quick-control-oscilloscope.html#bs8vvdm good example in the document...

10年弱前 | 0