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Vinod


MathWorks

195 total contributions since 2011

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Answered
My domain is blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
On further investigation, it appears that there is a difference between your AJAX code and the CURL command: AJAX request is: ...

5 hours ago | 0

Answered
Thingspeak Expiration Date? License Type: Free
I believe <https://thingspeak.com/pages/license_faq the FAQ> answers all your questions. For personal, non commercial projects o...

7 hours ago | 1

| accepted

Answered
My domain is blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
For security reasons, browsers do additional checks to prevent cross-origin scripting. Note that this is a pre-flight check that...

2 days ago | 0

Answered
Thingspeak, change data?
If you want to change the data in a channel, you can clear the channel and re-upload the data. 1) Log in to ThingSpeak and go ...

2 days ago | 0

| accepted

Answered
Can't send data to thingspeak api using GET HTTP
Have you tried using the ThingSpeak library: https://github.com/mathworks/thingspeak-arduino I'd recommend starting with those ...

2 days ago | 0

Answered
Can't upload - free license expired
Can you confirm your account is reactivated?

2 days ago | 0

Answered
Incorrect ThingSpeak update feed error "error_payment_required" status 402 returned
I believe your license was inactivated on account of not linking your legacy ThingSpeak account to a MathWorks account. If you l...

2 days ago | 0

| accepted

Answered
Readmatrix / readtable works on ThingsSpeak ?
If you have access to desktop MATLAB or MATLAB online, you can load the contents of the CSV file in MATLAB and use thingSpeakWri...

12 days ago | 0

Answered
ThingSpeak http error code 0 but data is inserted
The most likely situation is that your device is doing multiple updates within the allowed update rate (every 15s as a free user...

15 days ago | 0

| accepted

Answered
Simple Problem with Pie Chart on Thingspeak using MATLAB Visualization
Does your data have NaN's in the field? You can find this out by exporting the channel data from the 'Data Import/Export' tab of...

19 days ago | 0

Answered
ThingSpeak: missing IPv6 compatibility
It sounds like you're using a ststic IP address in your nodes. Static IP is not recommended for a number of reasons. Would it no...

21 days ago | 0

Answered
update lat, long. Just in order to plot those in a Google Map.
You can update the lat and long fields of the channel. In addition to the 8 fields, there are separate lat, long and elevation f...

24 days ago | 0

Answered
I would like an example of scpi over ethernet to Rigol Instruments using the instrument control toolbox.
I've not tested this as I don't have a Rigol scope, but you should be able to start from here: % Initialize scope. The port num...

26 days ago | 2

Answered
how to handle multiple device ?
Can you describe in more detail your project? How many nodeMCUs do you have? How many sensors per device? What are you doing wit...

1 month ago | 0

Answered
how we store video frames in firebase from matlab?
You might find this documentation helpful: https://www.mathworks.com/help/matlab/import_export/work-with-remote-data.html

1 month ago | 0

Answered
can we store the image from matab to thingspeak?
You might find this documentation page helpful. https://www.mathworks.com/help/matlab/import_export/work-with-remote-data.html...

1 month ago | 0

Answered
3rd Party Cookies
Have you disabled cookies in your browser, specifically, 3rd party cookies? Here are instructions on enabling them: https://di...

1 month ago | 0

Answered
Sending PuTTY-like command through TCPIP or VISA
If you can PuTTY into the box, then it is likely running an SSH server. Try using this: https://www.mathworks.com/matlabcentra...

1 month ago | 0

| accepted

Answered
Thingspeak - Expired License message & upload stopped working
Your request to re-activate your account has been addressed. Please log in to ThingSpeak and confirm you are able to send data t...

1 month ago | 0

| accepted

Answered
You have run out of messages
Can you please log in to ThingSpeak and check your account again?

1 month ago | 0

Answered
ThingSpeakWrite() limit only 33% more in Home version than free, should that be?
There are multiple levels of counters on https://thingspeak.com/account. The table shows the number of messages remaining and is...

1 month ago | 1

Answered
wrong time in my thingspeak chart
If you have browser extensions/plugins that are changing your browser's timezone, then you will see this issue. Try logging in...

1 month ago | 0

| accepted

Answered
How do I write to a ThingSpeak channel from a Raspberry pi via code deployed using the Matlab Coder?
As you said, there is a block in the Raspberry Pi Support Package that you can use. https://www.mathworks.com/help/supportpkg/...

1 month ago | 0

Answered
Plot won't show line
My guess is that your data has a bunch of NaN's in it which is causing the issue. Look at the documentation of the rmmissing a...

3 months ago | 0

| accepted

Answered
Trying to compile ThingSpeak Toolbox Support into a standalone App. How to add P file requirements manually.
If you are using R2019a (or newer) of MATLAB, you do not need to install the ThingSpeak Support Toolbox -- the functions are bui...

3 months ago | 0

| accepted

Answered
How can ı use talkback on thingspeak with simulink?
There are specific blocks in Simulink to send data to ThingSpeak or read data from ThingSpeak. See: https://www.mathworks.com...

3 months ago | 0

Channel


Mints dataset
This data is from the 'mints.mat' file with 8 of the 76 fields mapped

4 months ago

Answered
Multiple Values in one Field
You can pack more data into a field, but, you will have to use your own algorithm in MATLAB to unpack the data and update MATLAB...

6 months ago | 0

| accepted

Answered
Tweeting frequency with React App
Twitter rate limits how often the exact same tweet can be tweeted from an account. You will likely want to make your tweets uniq...

6 months ago | 0

| accepted

Answered
Use MATLAB on local ThingSpeak server
Hi James, At this time the GitHub version of ThingSpeak contains the data collection engine and some charting. If you are loo...

6 months ago | 1

| accepted

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