解決済み

Calculate area of sector

A=function(r,seta) r is radius of sector, seta is angle of sector, and A is its area. Area of sector A is defined as 0.5*(r^2...

約1ヶ月 前

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Rounding off numbers to n decimals

Inspired by a mistake in one of the problems I created, I created this problem where you have to round off a floating point numb...

約1ヶ月 前

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intersection of matrices

Given two matrices filled with ones and zeros, determine if they share a common row, column entry. These matrices are of identic...

約1ヶ月 前

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Check if number exists in vector

Return 1 if number _a_ exists in vector _b_ otherwise return 0. a = 3; b = [1,2,4]; Returns 0. a = 3; b = [1,...

約1ヶ月 前

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Return unique values without sorting

If the input vector A is [42 1 1], the output value B must be the unique values [42 1] The values of B are in the same order a...

約1ヶ月 前

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Generate N equally spaced intervals between -L and L

Given N and L, return a list of numbers (in ascending order) that divides the interval [-L L] into N equal-length segments. F...

約1ヶ月 前

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I want to display negative temperature on channel view

Here are a few ways to get negative numbers into ThingSpeak or to plot them in MATLAB. https://api.thingspeak.com/update?api_ke...

I want to display negative temperature on channel view

Here are a few ways to get negative numbers into ThingSpeak or to plot them in MATLAB. https://api.thingspeak.com/update?api_ke...

約1ヶ月 前 | 0

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Getting the indices from a matrix

Inspired by Problem 645. Getting the indices from a matrix. Given a matrix A (or a vector), return the indices (always in row...

約1ヶ月 前

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Is thingspeak free version account expire after one year

See the licensing FAQ. Free ThingSpeak licenses will renew yearly in the month you created the license assuming you meet the log...

Is thingspeak free version account expire after one year

See the licensing FAQ. Free ThingSpeak licenses will renew yearly in the month you created the license assuming you meet the log...

約2ヶ月 前 | 0

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Matlab Basics - Rounding III

Write a script to round a large number to the nearest 10,000 e.g. x = 12,358,466,243 --> y = 12,358,470,000

約2ヶ月 前

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Matlab Basics - Rounding II

Write a script to round a variable x to 3 decimal places: e.g. x = 2.3456 --> y = 2.346

約2ヶ月 前

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Check that number is whole number

Check that number is whole number Say x=15, then answer is 1. x=15.2 , then answer is 0. http://en.wikipedia.org/wiki/Whole_numb...

約2ヶ月 前

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MATLAB Basic: rounding IV

Do rounding towards plus infinity. Example: -8.8, answer -8 +8.1 answer 9 +8.50 answer 9

約2ヶ月 前

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MATLAB Basic: rounding III

Do rounding towards minus infinity. Example: -8.8, answer -9 +8.1 answer 8 +8.50 answer 8

約2ヶ月 前

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MATLAB Basic: rounding II

Do rounding nearest integer. Example: -8.8, answer -9 +8.1 answer 8 +8.50 answer 9

約2ヶ月 前

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App designer table handling

Thanks for showing the result Karol. Im taking your solution and adding it to the answers to help others find it. Solved by ...

App designer table handling

Thanks for showing the result Karol. Im taking your solution and adding it to the answers to help others find it. Solved by ...

2ヶ月 前 | 0

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Can't send data to Thingspeak from Microbit DFRobot kit

Are you able to update the channel using the GET command in your browser address bar? Click on your channel view and use the A...

Can't send data to Thingspeak from Microbit DFRobot kit

Are you able to update the channel using the GET command in your browser address bar? Click on your channel view and use the A...

2ヶ月 前 | 0

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Unable to write data by bulk update *csv method [ESP8266, Arduino framework]

I havent tested this recently, but I found it in an old folder and I expect that it works. I had to escape some values. Please ...

Unable to write data by bulk update *csv method [ESP8266, Arduino framework]

I havent tested this recently, but I found it in an old folder and I expect that it works. I had to escape some values. Please ...

2ヶ月 前 | 0

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Unable to write data by bulk update *csv method [ESP8266, Arduino framework]

The arduino client should take care of url encoding your data. I would use the raw text in the value of char csv_feed Perhap...

Unable to write data by bulk update *csv method [ESP8266, Arduino framework]

The arduino client should take care of url encoding your data. I would use the raw text in the value of char csv_feed Perhap...

3ヶ月 前 | 0

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How can I upload and plot temperature values that are both above zero (e.g., ambient) and below zero (e.g., in a freezer)?

I think the library answer seems best. Here is an example using the dallas one wire (that has some other dependancies built in ...

How can I upload and plot temperature values that are both above zero (e.g., ambient) and below zero (e.g., in a freezer)?

I think the library answer seems best. Here is an example using the dallas one wire (that has some other dependancies built in ...

3ヶ月 前 | 0

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Will generating an alert API key reset the USER API key?

The alert API key and user API key are seperate. Genenrating an alert API key wil not change your user API key.

Will generating an alert API key reset the USER API key?

The alert API key and user API key are seperate. Genenrating an alert API key wil not change your user API key.

3ヶ月 前 | 0

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回答済み

How to check DataPlugin in MATLAB

This pagedesribes how you can read MATLAB files into labview witha dataplugin and this answer describes some ways to import l...

How to check DataPlugin in MATLAB

This pagedesribes how you can read MATLAB files into labview witha dataplugin and this answer describes some ways to import l...

3ヶ月 前 | 0

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HOW TO CLEAN NULL FROM MY GET QUERY

We reccomend using multiple channels to record your data in the case of multiple devices or sensors with different frequencies. ...

HOW TO CLEAN NULL FROM MY GET QUERY

We reccomend using multiple channels to record your data in the case of multiple devices or sensors with different frequencies. ...

3ヶ月 前 | 0

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ThingSpeak Channel stopped receiving data since April 13th 2022

We strongly reccomend using the thingSpeak library for arduino and esp if possible. I dont see the problem directly. I would r...

ThingSpeak Channel stopped receiving data since April 13th 2022

We strongly reccomend using the thingSpeak library for arduino and esp if possible. I dont see the problem directly. I would r...

3ヶ月 前 | 0

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Why arduino send data to thingspeak only once?

Your device will continue to send data once disconnected from the USB port, as long as it is powered and within the WiFi range. ...

Why arduino send data to thingspeak only once?

Your device will continue to send data once disconnected from the USB port, as long as it is powered and within the WiFi range. ...

3ヶ月 前 | 0

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Thingspeak REST API READ results in data from wrong timezone

Check out the timezone and offset parameters in the read data endpoint.

Thingspeak REST API READ results in data from wrong timezone

Check out the timezone and offset parameters in the read data endpoint.

4ヶ月 前 | 0

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MQTT via esp8266 suddenly stopped connecting giving mqttClient.state() = -2 error!?

ThingSpeak recently updated the security certificate. Can you try reprogamming with the new cert? The ESP8266 MQTT example co...

MQTT via esp8266 suddenly stopped connecting giving mqttClient.state() = -2 error!?

ThingSpeak recently updated the security certificate. Can you try reprogamming with the new cert? The ESP8266 MQTT example co...

4ヶ月 前 | 0

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In thingspeak , how can I visualize two or more channels on one page so I can view different fields from different nodes at a time ?

In the tabs on the top of the ThingSpeak site, Click on Apps > MATLAB Visualizations then click the green 'New' button, and you ...

In thingspeak , how can I visualize two or more channels on one page so I can view different fields from different nodes at a time ?

In the tabs on the top of the ThingSpeak site, Click on Apps > MATLAB Visualizations then click the green 'New' button, and you ...

4ヶ月 前 | 1

回答済み

The graph couldn't be seen on the chart although the code ha been run correctly

We strongly reccomend using the ThingSpeak library for arduino, it takes care of a lot of code issues for you. Troubleshooting ...

The graph couldn't be seen on the chart although the code ha been run correctly

We strongly reccomend using the ThingSpeak library for arduino, it takes care of a lot of code issues for you. Troubleshooting ...

4ヶ月 前 | 0

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