cftool | Get inputs and outputs for a specific problem | Learning library
kandi X-RAY | cftool Summary
kandi X-RAY | cftool Summary
Get inputs and outputs for a specific problem on codeforces or URI.
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Top functions reviewed by kandi - BETA
- Compile a file
- Return the language of a file
- Parse uri problem problem
- Print out the output of cftool
- Run testcases
- Runs a child process
- Format time
- Run a child process
- Download a given URL
- Parse codeforces
- Parse a codeforces problem
- Match url pattern
- Parse command line arguments
- Creates an argument parser
- Create compile command
- Get get command parser
- Try to guess language
- Returns True if url matches the pattern
cftool Key Features
cftool Examples and Code Snippets
Community Discussions
Trending Discussions on cftool
QUESTION
I'm trying to do a fit on cftool for a basic oscillator. The problem is that Matlab won't make a fit; it keeps drawing a straight line. I've been experimenting with the starting points and limits, but to no avail.
The problem is probably something trivial, but I can't figure out the problem.
Current fit:
...ANSWER
Answered 2021-Jan-21 at 05:43You are using custom equation y = f(x) = a * exp(-b*x) * sin(dx+e) + c
.
Matlab understands dx
inside the sin
above as a constant coefficient, so you have the sin
of a constant, which is a constant number itself.
cftool
is left then trying to approximate a sinusoidal motion with f(x)
, which at this point is a custom exponential function of the type const * exp(-const * x) + const
, so the best it can do is to yield the mean value, that is, ~0.176
.
In order to correct this, just substitute d*x
for dx
inside the sin
in your custom function.
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