July 5, 2017
I have tried to clear my channel using https://api.thingspeak.com/channels/CHANNEL_ID/feeds.json api_key=USER_API
Of course CHANNEL_ID & USER_API replaced correctly. When i send this request by just typing it in the address bar of my browser it gives the response "-1". But the channel does not clear. What am i doing wrong here?
March 7, 2017
Your browser address bar is not capable of sending a DELETE request. You can use other software such as POSTMAN to make other HTTP requests, including DELETE and POST. it looks like you found the delete instructions, be sure you are using your user api key (not a channel read or write api_key). The user API key is on your profile page.
The proper response for the cleared channel is an empty JSON object, . The -1 indicates that the server did not complete the action you requested.
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