Yair Altman
Consultant
Website: http://UndocumentedMatlab.com
LinkedIn: http://www.linkedin.com/in/yairaltman
Author of "Accelerating MATLAB Performance" book:
http://UndocumentedMatlab.com/books/matlab-performance
Author of "Undocumented Secrets of MATLAB-Java Programming" book:
http://UndocumentedMatlab.com/books/matlab-java
MSc Computer Science, BSc Physics (both with top honors)
Professional programmer and manager since 1991
Contact me: altmany at gmail.com
Statistics
Contribute at least one answer each month for 6 consecutive months
Awarded to Yair Altman on 06 Nov 2018
Top ten contributors with the most downloaded submissions
Awarded to Yair Altman on 04 Jan 2021
Top ten contributors with the most downloaded submissions
Awarded to Yair Altman on 02 Jan 2020
Have 3 submissions connected to GitHub
Awarded to Yair Altman on 01 Jan 2020
Your submissions were downloaded 1000 or more times in a month
Awarded to Yair Altman on 01 Nov 2019
Your submission is selected as "Pick of The Week"
Awarded to Yair Altman on 09 Oct 2019
Publish your first review
Awarded to Yair Altman on 09 Oct 2019
Your submissions received 25 five star ratings
Awarded to Yair Altman on 09 Oct 2019
Publish your first submission
Awarded to Yair Altman on 09 Oct 2019
Answer 10 questions that were unanswered for more than 30 days
Awarded to Yair Altman on 23 Oct 2018
20 of your answers have been accepted
Awarded to Yair Altman on 05 Aug 2017
Content Feed
Exporting images (png) through export_fig - painfully slow
Try to either reduce the resolution (the -r450 part), or to save as a vector-graphics image (PDF/EPS) rather than a PNG bitmap.
2日 前 | 0
送信済み
export_fig
Publication-quality export of Matlab figures and axes to various vector & bitmap formats
26日 前 | ダウンロード 1311 件 |
How to save very large image to original resolution
Try to use export_fig's sister image-export utility, ScreenCapture: https://www.mathworks.com/matlabcentral/fileexchange/24323-s...
26日 前 | 0
送信済み
findjobj - find java handles of Matlab graphic objects
Find java objects contained within a specified java container or Matlab GUI handle
約1ヶ月 前 | ダウンロード 58 件 |
送信済み
ScreenCapture - screenshot of component, figure or screen
ScreenCapture gets a screen-capture image of any Matlab GUI handle, or specified screen area rectangle
2ヶ月 前 | ダウンロード 66 件 |
送信済み
IQML - Matlab connector to IQFeed
Matlab connector to IQFeed optimized for reliability, ease-of-use, functionality and performance (including parallelization)
2ヶ月 前 | ダウンロード 3 件 |
送信済み
cprintf - display formatted colored text in Command Window
Displays sprintf-formatted strings in the Command Window using the specified color/underline style
6ヶ月 前 | ダウンロード 102 件 |
送信済み
checkClass - inspect a Java/Matlab/COM class object/name
inspect a Java/MCOS/COM/.NET object or classname and display its methods, properties, events, interfaces, etc.
6ヶ月 前 | ダウンロード 3 件 |
Can I somehow improve performance of str2double?
I use the following function to convert a cell-array of strings to a cell-array of numeric values (where applicable) - it is ~2-...
7ヶ月 前 | 2
Speed issues with Matlab code compiled using SDK compiler for Python
Perhaps your deployed environment is different from your Matlab &D one. For example, perhaps you can access a GPU on the R&D env...
8ヶ月 前 | 0
How To Clear Java Heap Space Memory????
Clearing Matlab's Java heap space has been long awaited, but I'm afraid that the suggested submission (Davide Tabarelli's JavaHe...
9ヶ月 前 | 2
Import data tool speed
The import tool GUI only shows you a preview of the data, based on the top N lines in the file, it does not read and process the...
9ヶ月 前 | 0
| 採用済み
MATLAB Profiler - Granularity of Information
Use the [undocumented] -detail builtin profiler option, as in: profile on -detail builtin This works on old Matlab releases as ...
約1年 前 | 1
| 採用済み
How can I make the plot transparent in a gscattter?
Nice answer Adam, but not exactly accurate if you are willing to use some undocumented features... The underlying objects in a...
約1年 前 | 3
MATLAB export_fig crops title
This is fixed in the latest version of export_fig (3.09). In the future, report such issues in export_fig's issues page: https:/...
約1年 前 | 0
| 採用済み
How to speed up a code from the Code Profiler Results ?
Try to set the "Vectorized" property using the odeset function, before running ode45. Also, specifying the Jacobian in advance (...
約1年 前 | 0
| 採用済み
[Soft question] Tips and tools to analyze unfamiliar OO code
For inspecting a single object or class, try the GUI-based uiinspect utility (https://www.mathworks.com/matlabcentral/fileexch...
約1年 前 | 0
Heatmap Axis Labels Printing Vertically?
The heatmap's X labels orientation is dynamically determined based on the number of labels and the axes width. In other words, i...
約1年 前 | 1
送信済み
popupPanel Displays a popup panel with specified content
popupPanel Displays a popup panel with specified file contents, help topic, HTML or webpage
1年以上 前 | ダウンロード 1 件 |
graphics performance 2019a vs 2016b
R2019a uses the integrated axes toolbar, which constantly monitors mouse movements in order to generate data tips on-the-fly. If...
1年以上 前 | 0
| 採用済み
Poor performance of mex file
You m-function uses parallelization (parfor), while your mex file does not. This in itself could cause your m-code to run much f...
1年以上 前 | 0
Increase CPU Speed - MAC
You can separate the problem into separate tasks and launch separate Matlab processes to process them in parallel. This is essen...
1年以上 前 | 0
How can I clear stuck help popups?
Updates June 12, 2020: There is a recognized bug report on a very similar issue: https://www.mathworks.com/support/bugreports/1...
1年以上 前 | 5
| 採用済み
dynamic java path vs static java path
Some Java functionality, especially those that are concerned with Java events that need to propagate to Matlab callbacks, does n...
1年以上 前 | 0
Matlab in AVX2 mode (for AMD CPU's)
This is apparently fixed on R2020a as reported by @NedFlanders (original credit is apparently due to @MichelKatz): https://www...
1年以上 前 | 0
| 採用済み
How to change Heatmap's Grid (Edge) appereance and behavior?
There are several alternatives: Update the grid style to a non-solid line, for example: hHeatmap = struct(h_map).Heatmap; hHe...
1年以上 前 | 3
| 採用済み
Unable to use Java class in a package - Undefined function or variable 'CartesianCoordinate'.
This problem could be due to numerous possible causes, and unfortunately Matlab is not very helpful in explaining the root cause...
1年以上 前 | 0
How to load multiple excel files with multiple excel sheets and store it in matlab faster?
Try to use the 'basic' mode of xlsread, which reads the XLS file directly instead of using the much slower Excel instance: for ...
1年以上 前 | 0
Interactive broker timeseries vs history?
Both of these functions in the Trading Toolbox call IB's reqHistoricalDataEx function internally, but for some reason Mathworks ...
1年以上 前 | 0
