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Julián Francisco


Polytechnic University of Madrid

54 total contributions since 2011

MSc Aerospace Engineer. My skills about programming languages are C, Fortran, Maple and Matlab.
Professional Interests: Scientific Computing, Programming Languages, Aerospace Engineering

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  • 3 Month Streak
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Contributions in
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Solved


Determine if input is odd
Given the input n, return true if n is odd or false if n is even.

meer dan 8 jaar ago

Solved


Times 2 - START HERE
Try out this test problem first. Given the variable x as your input, multiply it by two and put the result in y. Examples:...

meer dan 8 jaar ago

Solved


Weighted average
Given two lists of numbers, determine the weighted average. Example [1 2 3] and [10 15 20] should result in 33.333...

meer dan 8 jaar ago

Solved


Add two numbers
Given a and b, return the sum a+b in c.

meer dan 8 jaar ago

Solved


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

meer dan 8 jaar ago

Solved


Find the sum of all the numbers of the input vector
Find the sum of all the numbers of the input vector x. Examples: Input x = [1 2 3 5] Output y is 11 Input x ...

meer dan 8 jaar ago

Solved


Make the vector [1 2 3 4 5 6 7 8 9 10]
In MATLAB, you create a vector by enclosing the elements in square brackets like so: x = [1 2 3 4] Commas are optional, s...

meer dan 8 jaar ago

Solved


How to find the position of an element in a vector without using the find function
Write a function posX=findPosition(x,y) where x is a vector and y is the number that you are searching for. Examples: fin...

meer dan 8 jaar ago

Question


Matrix multiplication (best computational approach)
I have to make a coordinates transformation between two reference systems (axes). For it, three matrices (3x3) have to be multip...

meer dan 8 jaar ago | 3 answers | 0

3

answers

Question


Hide maximize/minimize and close buttons for a figure window
I have a figure window and I want to remove the maximize/minimize and close buttons of it. I can not use any type of Java contai...

bijna 9 jaar ago | 1 answer | 0

1

answer

Question


Matlab ResizeFcn callback
I am worried about the look and feel of my GUI designed with Matlab. In concrete, I do not like how the figure window resizing i...

bijna 9 jaar ago | 3 answers | 0

3

answers

Question


Absolute and relative tolerance definitions
I am trying to understand the following Matlab definitions for RelTol and AbsTol parameters: RelTol — This tolerance is a m...

bijna 9 jaar ago | 2 answers | 2

2

answers

Question


Zooming in and out removing
I am using the rotate3d function to allow 3D rotation of a sphere through the mouse movement. However, when I rotate it, it zoom...

ongeveer 9 jaar ago | 3 answers | 0

3

answers

Question


Marker transparency
I would like to know if there is possible to set the transparency of a line marker to opaque in order to improve my animation: <...

ongeveer 9 jaar ago | 1 answer | 0

1

answer

Question


Animation improvement
I have written a code to create an animation: <http://www.mathworks.com/matlabcentral/answers/24642-invalid-object-handle-error/...

ongeveer 9 jaar ago | 1 answer | 0

1

answer

Answered
Invalid object handle error
Finally, I have found that there was a cla command line, which was the guilty of the error, in the main program before the surfa...

ongeveer 9 jaar ago | 0

Question


Invalid object handle error
I have the following code which is a graphic rendering of the movement of a satellite around the Earth. function ex global ...

ongeveer 9 jaar ago | 2 answers | 0

2

answers

Question


Updating a string inside a callback
The following code is a graphic rendering of the Earth globe spinning eastward. I have two push buttons, Spin and Stop. Both sha...

ongeveer 9 jaar ago | 2 answers | 1

2

answers

Question


Feedback for me
Hi community members. In the last weeks, I have found my questions are not getting answers. This makes me ask myself if perhaps ...

ongeveer 9 jaar ago | 3 answers | 2

3

answers

Answered
Wish-list for MATLAB Answer sections.
I would like to propose an "achievements" system similar to existing one for other Q&A sites (for example <http://stackoverflo...

ongeveer 9 jaar ago | 0

Answered
Multicolumn legend
Here is my solution for a legend which has a 'SouthOutside' location (I have supposed that the axes graphic object has 'normaliz...

ongeveer 9 jaar ago | 0

Question


Multicolumn legend
I would like to be able to create a legend to have a number of columns given (for default the legend function has an unique colu...

ongeveer 9 jaar ago | 2 answers | 0

2

answers

Question


FontSize for the image's legend
I have the following code: X = 0:pi/100:0.25*pi; Y1 = sin(X); Y2 = cos(X); Y3 = tan(X); fh = figure('toolba...

ongeveer 9 jaar ago | 2 answers | 0

2

answers

Question


Excel header title from html code
I have a GUI with an uitable whose header's title (variable "header") uses html code. I want to export the uitable data (include...

ongeveer 9 jaar ago | 1 answer | 0

1

answer

Question


Html code used along with Matlab
I have recently found that Matlab can use LaTeX character sequences. However, they only can be used by the functions text, title...

ongeveer 9 jaar ago | 2 answers | 0

2

answers

Question


Automatic choice of graphics format file for print command
I have the following code: X = 0:pi/100:2*pi; Y = sin(X); fh = figure('toolbar','none','menubar','none','Units','characte...

ongeveer 9 jaar ago | 1 answer | 0

1

answer

Question


Size and resolution from an image saved as a graphic format file
I have the following code to save a plot to a graphics format file. My problem is with the image obtained. If I save the image a...

ongeveer 9 jaar ago | 1 answer | 0

1

answer

Answered
Please Help in MATLAB .
The trigonometric function sin(x) can be approximated by the infinite series sin(x) = x^1/1! – x^3/3! + x^5/5! – x^7/7! + x^9/9!...

ongeveer 9 jaar ago | 0

Question


Save a plot to a graphics format file
I am designed the following GUI where there are an axes. I want to save the plot drawn inside them to a graphics format file. Ho...

ongeveer 9 jaar ago | 2 answers | 0

2

answers

Question


Export uitable's data to a spreadsheet Excel
I have designed a GUI which has an uitable and a push button which, when is pressed, allows to export the uitable's data to an E...

ongeveer 9 jaar ago | 1 answer | 0

1

answer

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