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Christopher Stapels


MathWorks

32 total contributions since 2017

ThingSpeak Documentation Writer
and LCH enthusiast

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Christopher Stapels's Badges

  • Knowledgeable Level 1
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  • Revival Level 1
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Contributions in
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Soil Monitor Data Summary
Time aligned data

2 months ago

Channel


Daily Stock Data
Google Stock values compiled daily.

2 months ago

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Home Temp Time

3 months ago

Solved


A Simple Tide Gauge with MATLAB
*&#8767 &#8767 &#8767 &#8767 &#8767 &#8767 &#8767 &#8767* You are standing in a few inches of sea water on a beach. You a...

4 months ago

Solved


5 Prime Numbers
Your function will be given lower and upper integer bounds. Your task is to return a vector containing the first five prime numb...

4 months ago

Answered
I want to calculate the derivative of a channel. Can you suggest the best way to do so.
One way would be to use an instance of the React App to test if field 2 has a value in it, perhaps "if field2 < 0". Then have t...

4 months ago | 0

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omg

5 months ago

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MyChannel

5 months ago

Answered
Thingspeakwrite error when using string array
When you write string data to ThingSpeak, it generally wants to have a cell array. You should not usually need to do the Strin...

6 months ago | 0

| accepted

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Lights1
kitchen lights control

6 months ago

Solved


Make an awesome ramp for a tiny motorcycle stuntman
Okay, given a vector, say v=[1 3 6 9 11], turn it into a matrix 'ramp' like so: m=[1 3 6 9 11; 3 6 9 11 0; 6 9 ...

6 months ago

Solved


Back to basics 21 - Matrix replicating
Covering some basic topics I haven't seen elsewhere on Cody. Given an input matrix, generate an output matrix that consists o...

6 months ago

Answered
No more plot although no errors
As of December 14, your channel has recent values in it. I think the NaN values between real values are making the plot scale u...

6 months ago | 0

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My Channel

6 months ago

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HomeTemp1

7 months ago

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Community Scores

7 months ago

Solved


Pernicious Anniversary Problem
Since Cody is 5 years old, it's pernicious. A <http://rosettacode.org/wiki/Pernicious_numbers Pernicious number> is an integer w...

8 months ago

Solved


Energy of a photon
*&#9883 &#9762 &#9883 &#9762 &#9883 &#9762 &#9883* Given the frequency F of a photon in giga hertz. Find energy E of this...

8 months ago

Solved


How to subtract?
*&plusmn &plusmn &plusmn &plusmn &plusmn &plusmn &plusmn &plusmn &plusmn &plusmn &plusmn* * Imagine you need to subtract one...

8 months ago

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Twitter Data

8 months ago

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IPT Results

9 months ago

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Weather Text

10 months ago

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Office Temperature

10 months ago

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Stock Value Data
Prices for Google Stock every 5 minutes during the times when the market is open

1 year ago

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Soil Monitor
Plant in my officre

1 year ago

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walk_pulse

1 year ago

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cheer2

1 year ago

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import test

1 year ago

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Time

1 year ago

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CheerSurfer
Cheer Lights World Surfing Game

1 year ago

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