Jan Studnicka

Humusoft s.r.o.

Last seen: Today | Active since 2015

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I'm an Application Engineer for Humusoft.

Professional Interests: Machine Learning, Data Analytics, Optimization, Parallel Computing

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Solved

Calculate BMI
Given a matrix |hw| (height and weight) with two columns, calculate BMI using these formulas: * 1 kilogram = 2.2 pounds * 1 ...

2 months ago

Solved

Plot Damped Sinusoid
Given two vectors |t| and |y|, make a plot containing a blue ( |b| ) dashed ( |--| ) line of |y| versus |t|. Mark the minimum...

2 months ago

Solved

Calculate a Damped Sinusoid
The equation of a damped sinusoid can be written as |y = A.ⅇ^(-λt)*cos(2πft)| where |A|, |λ|, and |f| ...

2 months ago

Solved

Solve a System of Linear Equations
Example: If a system of linear equations in x₁ and x₂ is: 2x₁ + x₂ = 2 x₁ - 4 x₂ = 3 Then the coefficient matrix (A) is: 2 ...

2 months ago

Solved

Verify Law of Large Numbers
If a large number of fair N-sided dice are rolled, the average of the simulated rolls is likely to be close to the mean of 1,2,....

2 months ago

Solved

Find the Oldest Person in a Room
Given two input vectors: * |name| - user last names * |age| - corresponding age of the person Return the name of the ol...

2 months ago

Solved

Convert from Fahrenheit to Celsius
Given an input vector |F| containing temperature values in Fahrenheit, return an output vector |C| that contains the values in C...

2 months ago

Solved

Calculate Amount of Cake Frosting
Given two input variables |r| and |h|, which stand for the radius and height of a cake, calculate the surface area of the cake y...

2 months 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:...

2 months ago

Submitted

Map Area Measurement App
Select points of geographical polygon from map to measure its area and perimeter.

2 months ago | 10 downloads |

Answered
Strange values of map axes limits (axesm).
Hello, The default setting for map axes is that the map frame is not visible. You need to toggle the visibility of the map fram...

5 months ago | 0

Submitted

Polygon Drawing App
GUI for polyshape. Draw polygon and measure its area and perimeter.

7 months ago | 13 downloads |

Solved

The Piggy Bank Problem
Given a cylindrical piggy bank with radius g and height y, return the bank's volume. [ g is first input argument.] Bonus though...

8 months ago

Submitted

Import Explorer for tables
GUI for readtable and datastore. Select / sort table variables and their data types. Read from multiple tabular text or Excel fi...

10 months ago | 11 downloads |

Answered
Custom geobasemaps not show in compiled application.
As described here: https://www.mathworks.com/help/map/ref/addcustombasemap.html?searchHighlight=addCustomBasemap&s_tid=srchtitl...

10 months ago | 1

| accepted

Answered
Geoaxes zoom not working after adding ButtonDownFcn.
As mentioned here in the documentation: "Sometimes MATLAB® automatically disables the built-in interactions. For example, they ...

12 months ago | 1

Submitted

Pravděpodobnostní analýza ThingSpeak dat - hody kostkou
Pravděpodobnostní analýza průběžně zaznamenávaných výstupů z hodů jednou kostkou.

2 years ago | 1 download |

Answered
Is MATLAB App Designer in place of Matlab GUI in MATLAB 2020a?
Yes. You can find more information here: https://www.mathworks.com/products/matlab/app-designer/comparing-guide-and-app-de...

2 years ago | 1

Submitted

Locale-sensitive sort
Function sort_locale performs locale-sensitive sort in MATLAB.

2 years ago | 2 downloads |

Submitted

Vykreslení vejce
Live Script s postupem, jak vykreslit vejce ve 2D a 3D.

2 years ago | 1 download |

Solved

Project Euler: Problem 1, Multiples of 3 and 5
If we list all the natural numbers below 10 that are multiples of 3 or 5, we get 3, 5, 6 and 9. The sum of these multiples is 23...

2 years ago

Answered
Use find to filter for results specified by user
Hi, strcmp is slower then == and you can use == with strings. You can also save space and get better performance by using categ...

2 years ago | 0

| accepted

Answered
Hi, how can i proceed with this question, everytime i plot it, it doesn't show me my line. Can u guys help me
You are missing . before /. See: https://www.mathworks.com/help/matlab/ref/rdivide.html https://www.mathworks.com/help/matlab/...

2 years ago | 0

| accepted

Answered
Data Tip addition not working
close all; clc figPosition = [0 0 1 1]; data = readtable('FertilitySoloCountries.xlsx', 'PreserveVariableNames', true); year...

2 years ago | 0

| accepted

Answered
Gtk-Message: 16:17:51.771: Failed to load module "canberra-gtk-module"
See bug reports: https://www.mathworks.com/support/bugreports/details/1995075 "On some Linux distributions, a message appears ...

2 years ago | 2

Answered
Gtk-Message: 10:32:31.466: Failed to load module "canberra-gtk-module"
See bug reports: https://www.mathworks.com/support/bugreports/details/1995075 "On some Linux distributions, a message appe...

2 years ago | 4

Answered
How can I convert csv files to matlab whilst also looping through folders?
Hi, I would try using datastore: https://www.mathworks.com/help/matlab/datastore.html Hope it helps.

3 years ago | 0

Answered
Exception in thread "Thread-5": java.lang.NullPointerException after exiting [Matlab 2018b]
It looks like the known bug. You can find workaround here: https://www.mathworks.com/support/bugreports/1765886

3 years ago | 4

| accepted

Answered
Formula for calculating marginal risk contributions (video MATLAB for Advanced Portfolio Construction and Stock Selection Models)
Hi, correct formula is in slide number 7.

5 years ago | 0

| accepted

Answered
Getting result for Bloomberg SRCH function or Excel BSRCH
Hi, I believe this MATLAB function is equivalent to BSRCH: https://www.mathworks.com/help/datafeed/blp.lookup.html Jan

5 years ago | 0