Gelöst

Calculate the area of a triangle between three points
Calculate the area of a triangle between three points: P1(X1,Y1) P2(X2,Y2) P3(X3,Y3) these three points are the vert...

mehr als 3 Jahre vor

Gelöst

Pi Estimate 1
Estimate Pi as described in the following link: <http://www.people.virginia.edu/~teh1m/cody/Pi_estimation1.pdf>

mehr als 3 Jahre vor

Gelöst

radius of a spherical planet
You just measured its surface area, that is the input.

mehr als 3 Jahre vor

Gelöst

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...

mehr als 3 Jahre vor

Gelöst

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...

mehr als 3 Jahre vor

Gelöst

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...

mehr als 3 Jahre vor

Gelöst

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,...

mehr als 3 Jahre vor

Gelöst

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...

mehr als 3 Jahre vor

Gelöst

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...

mehr als 3 Jahre vor

Beantwortet
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...

mehr als 3 Jahre vor | 0

Gelöst

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...

mehr als 3 Jahre vor

Beantwortet
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...

mehr als 3 Jahre vor | 0

Gelöst

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

mehr als 3 Jahre vor

Gelöst

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

mehr als 3 Jahre vor

Gelöst

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...

mehr als 3 Jahre vor

Discussion

Community contests to help you improve your MATLAB coding skills
Hopefully you are aware that MATLAB is built into ThingSpeak. Right now, MathWorks is hosting two contentsthat can help you lea...

mehr als 3 Jahre vor | 0

Gelöst

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

mehr als 3 Jahre vor

Gelöst

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

mehr als 3 Jahre vor

Gelöst

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

mehr als 3 Jahre vor

Gelöst

MATLAB Basic: rounding
Do rounding near to zero Example: -8.8, answer -8 +8.1 answer 8

mehr als 3 Jahre vor

Beantwortet
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 ...

mehr als 3 Jahre vor | 0

Beantwortet
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...

mehr als 3 Jahre vor | 0

Beantwortet
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 ...

mehr als 3 Jahre vor | 0

Beantwortet
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...

mehr als 3 Jahre vor | 0

Beantwortet
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 ...

mehr als 3 Jahre vor | 0

Beantwortet
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.

mehr als 3 Jahre vor | 0

| akzeptiert

Beantwortet
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...

mehr als 3 Jahre vor | 0

Beantwortet
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. ...

mehr als 3 Jahre vor | 0

Beantwortet
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...

mehr als 3 Jahre vor | 0

Beantwortet
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. ...

mehr als 3 Jahre vor | 0