Gavin Seddon

Last seen: mer än 3 år ago | Active since 2015

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MAC MATLAB crashing on start up
Hello when i start MATLAB on my MAC it crashes I then start from an x11 terminal and i get /Applications/MATLAB_R2020a.app/C...

mer än 5 år ago | 0 answers | 0

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answers

Question

plotting x and y differential
hello I have plotted x and y data and seen evidence of a bifurcation. I want to plot x vs diff y. this is what i did : ...

mer än 5 år ago | 1 answer | 0

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answer

Question

using command to operate cftool
Hello I am using large data sets and cftool continually buffers. I have increased my memory to 96gb and the buffering remains...

mer än 5 år ago | 1 answer | 0

1

answer

Question

negative x axis meaning
Hello I have a vector plot created from multiple functions. The x axis values are incorrect and some are negative. Does matla...

mer än 5 år ago | 1 answer | 0

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answer

Question

will increased memory solve buffering issues
Hello I have tables with many floating point values and when I try to use cftool my MAC starts buffering. It is a quad core i...

nästan 6 år ago | 1 answer | 0

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viewing vectors from a table
Hello, My recent results have allowed me to generate a feather graph (found at: https://uk.mathworks.com/matlabcentral/answer...

ungefär 6 år ago | 1 answer | 0

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Question

incomplete graph from array
Hello, I have created an array of a table. a plot of the data shows a complete sine wave. When I plot the array using "con...

ungefär 6 år ago | 0 answers | 0

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answers

Question

matlab function not recognised by excel
Hello, I have generated a matlab function and then taken the second derivitive. I want to place this function within an...

mer än 6 år ago | 0 answers | 0

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answers

Question

calculating x when y is > 0
Hello I have plotted a changing distance (d(x)) with time using cftool and calculated the function. Its derivative was calcula...

mer än 6 år ago | 1 answer | 0

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answer

Question

linking table column label with symbolic function
hello using an uploaded table is it possible to define the column labels as symbolic functions? Thereby enabling subsequent sy...

ungefär 7 år ago | 0 answers | 0

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answers

Question

plotting derivative function against Y value
hello I have a distance/time graph and I want to plot the velocity against distance. I have created the velocity function v:eva...

ungefär 7 år ago | 1 answer | 0

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Question

Unsual gradient from gradient
Hello, when I try and calculate the gradient I receive slope = gradient (fx) slope = (7167*x^2)/25000 - (3523*...

mer än 7 år ago | 1 answer | 0

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answer

Question

Radian calculation from either differential or gradient
Hello, I have gradiant values (and their differentials). However, my motion is in a circle and mathematically the 2πrad may be ...

nästan 8 år ago | 1 answer | 0

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Question

Using 0 1 chaos test
Hello, I have some noisy data which I would like to test for chaos. I have checked the web but cannot find the instructions for...

nästan 8 år ago | 1 answer | 0

1

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Question

Substituting and evaluating function
I have attempted to substitute the X variable into my function and evaluate it. This is the result. If it is not possible please...

ungefär 8 år ago | 1 answer | 0

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Question

Gradient is zero yet exists
Hello gradient (140,150), the answer is 0, but it exIhere is my error please? Also, is *diff* for calculating the derivative?...

ungefär 8 år ago | 1 answer | 0

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Question

Import data to splinetool create spline with function
Hello, initially I created a spline with cftool. Is it possible to import the same data to splinetool and generate the function...

ungefär 8 år ago | 1 answer | 0

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answer

Question

Creating phase plot from initial data
I have a data table with no associated function, is it possible to generate the vector field and phase diagram from this? GS....

mer än 8 år ago | 1 answer | 0

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Question

Determining function for smoothing spline
Hello, my data when plotted resembles a plot of a sine function and consequently a polynomial curve will not converge. Therefor...

mer än 8 år ago | 1 answer | 0

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Question

slope at defined co-ordinates
Hello I have defined my distance function as d = (5757*x^3)/100000 - (2227*x^2)/10000 + (1303*x)/2500 + 25/2 I then diffe...

mer än 8 år ago | 1 answer | 0

1

answer

Question

Gradient command producing multiple functions
Hello, when I use the gradient command I am given multiple functions as the answer. I assume these are the gradient at each 'ro...

nästan 9 år ago | 2 answers | 0

2

answers

Question

error when plotting function
hello, when i give this function i get the following error will someone please correct me ? >> fplot(@(a1*sin(b1*x+c1) + a2...

nästan 9 år ago | 1 answer | 0

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Question

Multiplying spreadsheet column by variable
Hello can a spreadsheet column be multiplied by a variable of a function to generate a new column? g.

ungefär 9 år ago | 1 answer | 0

1

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Question

getting an import error
hello when I try to Import data I receive Error using uiimport (line 142) Java exception occurred: java.lang.NullPointer...

mer än 9 år ago | 0 answers | 0

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answers

Question

Error using plot command
hello, I am attempting to replot my data however I received this error Error using symengine The dimensions do not match. ...

mer än 9 år ago | 0 answers | 0

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Answered
generating graph from curve fit plot
This can be found: http://uk.mathworks.com/help/curvefit/plot.html

mer än 9 år ago | 0

| accepted

Question

generating graph from curve fit plot
Hello, is it possible to use the fitted curve from cftool rather than use the function it has calculated to generate the grnap...

mer än 9 år ago | 1 answer | 0

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answer

Question

.fig won't open
I have created a.fig file which is set to 'visible' however when I try and open this either using File >Open or openfig it is n...

mer än 9 år ago | 2 answers | 0

2

answers

Question

Function plot appears reversed
Hello, The plotted function Y value is e20 when it should be 13.6e1. So rather than a graph starting linear and going constant...

mer än 9 år ago | 0 answers | 0

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answers

Question

Function plot limits produces errors
fplot (@(x) was used to generate a figure the resulting curve shape is wrong and errors are produced. The correct X minimum a...

mer än 9 år ago | 1 answer | 0

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