Noah Poole

Active since 2017

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How to select specific time frames from data?
I need to isolate the data between 7am-9am and 8pm-12am from a large set of 24-hour data that runs over a year. I'm not sure how...

7 years ago | 2 answers | 0

2

answers

Question

trouble with plotting dates on x-axis
I'm using the following code: %Question 2 %First load data into script date= brisbanecbdaq2010(:,1) pollution= bri...

7 years ago | 1 answer | 0

1

answer

Question

Multiple linear regression using 8 predictor variables?!
Hi, I have been asked to predict the compressive strength of concrete using 8 variables, that all influence this value. I have ...

7 years ago | 1 answer | 0

1

answer

Question

How to plot date and time data on the same axis?
I have an excel file that has a column for date, time and pollution levels. I want to plot the date AND time on the x-axis and t...

7 years ago | 1 answer | 0

1

answer

Question

How to plot the Total emission curve of the sun?
Hi everyone, I have been trying to plot the total emission curve of the sun using planks formula: using this code: w= 300:0.5...

7 years ago | 1 answer | 0

1

answer

Question

Code wont work keeps giving error message: Argument to dynamic structure reference must evaluate to a valid field name.
this is my code: t=0:0.001:10; wn= 0.898; a= 0.843; z= 0.005122; wd=0.897; y= a*(exp.(-z*wn*t))*(sin(wd*t)) and I kee...

8 years ago | 2 answers | 0

2

answers

Question

How do I make a function file that can calculate the modified eulers method?
I have to create a function file that can use the modified eulers method to calculate for any ode. It is supposed to work like t...

8 years ago | 1 answer | 0

1

answer