# Jonathan LeSage

### MathWorks

In my spare time, I love exploring the world and working on my home culinary abilities, including pasta making and home brewing.

By day, I am a Senior Application Engineer at the MathWorks with a background in power systems and controls engineering. I travel to work with our customers on modeling/simulation applications and predictive maintenance.

Professional Interests: Controls, estimation, machine learning, mobile robotics, energy storage technologies, batteries, power systems

**Statistics**

RANK**321**

of 246,697

REPUTATION**206**

CONTRIBUTIONS

**0** Questions

**53** Answers

ANSWER ACCEPTANCE **
0.00%
**

VOTES RECEIVED**45**

RANK**1,210** of 17,210

REPUTATION**1,409**

AVERAGE RATING**5.00**

CONTRIBUTIONS**5** Files

DOWNLOADS **418**

ALL TIME DOWNLOADS**11418**

CONTRIBUTIONS**0 Posts**

CONTRIBUTIONS**0** Public Channels

AVERAGE RATING

CONTRIBUTIONS**0** Highlights

AVERAGE NO. OF LIKES

**Content Feed**

Submitted

Drawworks Electro-Mechanical Simulation for Oil/Gas Drilling

Includes two model fidelities for simulating a drawworks system for drilling applications.

1 year ago | 15 downloads |

Submitted

Analyzing the Sun's Path

Solar Position Tracking and the Analemma Phenomenon

1 year ago | 8 downloads |

Submitted

Grid Code Compliance for Renewable Resource Integration

Use MATLAB/Simulink to evaluate Grid Code Compliance, such as IEEE 1547

1 year ago | 25 downloads |

Submitted

Microgrid Energy Management System (EMS) using Optimization

Online optimization of energy storage actions in a microgrid given system constraints and pricing

1 year ago | 159 downloads |

How do I combine multiple plots in a for loop?

Add “hold on” prior to your for-loop. Adding a "hold on" command means that anything that you plot will not clear the existing...

3 years ago | 4

| accepted

Submitted

Systems-Level Microgrid Simulation from Simple One-Line Diagram

Example simple Microgrid with library of PQ-based Renewables and Diesel GenSets.

3 years ago | 208 downloads |

op-amp inverter on simulink

I took a look at the example model that you attached to your question. I saw what you mean by the square pulse does not start at...

6 years ago | 1

Help on gmdistributionfit toolbox

When you plot the |gmdistribution| fit results, did you remember to pass in both the x and y arguments to the |plot| function? ...

8 years ago | 0

why am I getting this linprog error ?

You should check the dimensions of both your 'f' vector and your 'Aeq' matrix. Both of these values are multiplied with the vect...

8 years ago | 0

The Integration of Gaussian PDF to obtain the CDF why don’t I get the correct answer?

After reviewing your code, I was able to figure out what was troubling you. The flow of your code and equations are all correct,...

8 years ago | 1

| accepted

How do I pass variables from one GUI to another

You can use the |<http://www.mathworks.com/help/matlab/ref/setappdata.html setappdata>| and |<http://www.mathworks.com/help/matl...

8 years ago | 12

| accepted

Look-up table with changing table

From what you are describing as requirements, you are correct that you need to use the <http://www.mathworks.com/help/simulink/s...

8 years ago | 1

| accepted

to find rise time, settling time, overshoot, steady-state error by a model generated in Simulink ?

I am assuming that you're already providing a step input to your Simulink model via the <http://www.mathworks.com/help/simulink/...

8 years ago | 0

Fitting exponential function, coefficients and errors

You have quite a few options that you might want to check out to improve your exponential fit! As an option within the |fit| fun...

8 years ago | 0

| accepted

How can i open SimPowersystems library in R2013b?

The Simulink component library, SimPowerSystems, is an additional package for use in the Simscape environment. You can check the...

8 years ago | 0

Need help using ODE45 and eulers function

It looks to me that you're nearly there! I found a couple of small mistakes that seems to be holding you back. Changes to you...

8 years ago | 2

how to update the value of a transfer function block during run time of simulation

Here is a link to some documentation that details several different methods in Simulink to achieve what you're looking for: *...

8 years ago | 0

Find Triggered subsystem in a simulink model

One potential method would be to generate a list of all the blocks in your Simulink model, and then find blocks which are of the...

8 years ago | 0

| accepted

How to set y-axes intercept

You can set the limits of the x-axis directly using the |<http://www.mathworks.com/help/matlab/ref/xlim.html xlim>| function. If...

8 years ago | 0

| accepted

How can I perform a K-means cluster analysis of the data inside a cell array?

The documentation of the |<http://www.mathworks.com/help/stats/kmeans.html kmeans>| function that you are trying to use requires...

8 years ago | 0

| accepted

Define colormap according to certain variable.

You can define a colormap using the |<http://www.mathworks.com/help/matlab/ref/colormap.html hsv>| function and then define the ...

8 years ago | 1

Comparison between two stairs graphs

Since you're interested in the values of the empirical CDF curves, you could use the |ecdf| function as opposed to |cdfplot|. Th...

8 years ago | 0

Estimation of parameters for a non-linear model

If you're using MATLAB 2011b or newer, you likely have access to the <http://www.mathworks.com/help/curvefit/interactive-curve-a...

8 years ago | 0

| accepted

How to put a title on a colorbar?

Using the handle for the colorbar (in your case, the variable hcb), you can locate the colorbar handle title using the |get| fun...

8 years ago | 2

| accepted

Solved

Find the two most distant points

Given a collection of points, return the indices of the rows that contain the two points most distant from one another. The inpu...

8 years ago

Solved

Indexed Probability Table

This question was inspired by a Stack Overflow question forwarded to me by Matt Simoneau. Given a vector x, make an indexed pro...

8 years ago

Poker bar graph, probability

An interesting problem for sure, as there are many methods through which you could tackle this problem. If you're relatively new...

8 years ago | 1

| accepted

Solved

Sums with Excluded Digits

Add all the integers from 1 to n in which the digit m does not appear. m will always be a single digit integer from 0 to 9. no...

8 years ago

Solved

Remove all the words that end with "ain"

Given the string s1, return the string s2 with the target characters removed. For example, given s1 = 'the main event' your ...

8 years ago

Solved

Extract leading non-zero digit

<http://en.wikipedia.org/wiki/Benford%27s_law Benford's Law> states that the distribution of leading digits is not random. This...

8 years ago