Answered
IQFeed market depth and time series not working
!NO_DATA! is an IQFeed message that means there is no market-depth data for this symbol. It is my understanding that Market Dept...

4 years ago | 0

Answered
Listener for receiving real time data through DataFeed Toolbox
Consider using my IQML (IQFeed-Matlab) connector as an alternative. IQML enables both synchronous (blocking) and asynchronous (b...

4 years ago | 0

Answered
Field List of IQFeed Realtime Data
Cross-reference: https://www.mathworks.com/matlabcentral/answers/459284-datafeed-toolbox-iqfeed-level-1-data-fields-description ...

4 years ago | 0

Answered
IQFEED and Matlab too slow
For anyone interested, the IQML (IQFeed-Matlab) connector was specifically designed for top performance, including parallel and ...

4 years ago | 0

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Datafeed toolbox & IqFeed -- any known solution to IAsyncResult error?
Perhaps your IQFeed subscription does not enable fetching historic tick/interval data for XIV. Adding the necessary subscription...

4 years ago | 0

Answered
Are synchronous IQFEED data queries possible in Datafeed Toolbox 4.5 (R2013a)?
For anyone interested, the IQML (IQFeed-Matlab) connector enables both synchronous (blocking) and asynchronous (background) quer...

4 years ago | 0

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Can I use the function HISTORY with multiple security inputs for IQFEED data in MATLAB (R2013a)?
For anyone interested, the IQML (IQFeed-Matlab) connector enables querying multiple securities at once, specified as either a ce...

4 years ago | 0

Answered
3D point clouds with variable marker transparency, color and size
As an alternative to scatter3, you could keep using plot3 and attach a callback function to the axes that gets invoked whenever ...

4 years ago | 2

Answered
Does 2019b (windows) contains java?
The Java runtime is located in C:\Program Files\Matlab\R2019b\sys\java\jre\win64\jre\bin\

4 years ago | 0

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Figure uitable does not display html image in 2019b
It's not just in tables. For some reason <img> tags are now ignored in all uicontrols (inc. buttons, listboxes etc.). There is n...

4 years ago | 3

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How to keep axes on top of uipanels?
You can also use a semi-tranparent patch. Patches are children of axes, so they move around with the axes if you zoom or pan, an...

4 years ago | 1

Answered
How to keep axes on top of uipanels?
You had a few errors in your code: first, you made Panel3 transparent instead of Panel2. Secondly, you need to create Panel2 ins...

4 years ago | 0

Answered
How can I put a javacomponent in the app designer?
Java components are not supported by AppDesigner or uifigures. This is not a temporary limitation - it is a fundamental outcome ...

4 years ago | 4

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Answered
deprecated javacomponent and javaframe
I am very sorry to say that I am not aware of any easy way to make the transition from a Java-rich GUI to uifigures. All the mai...

4 years ago | 9

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com.mathworks.*....
These Java classes are internal to Matlab, are unsupported and undocumented. To the best of my knowledge, the only location that...

4 years ago | 1

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Answered
How do I speed up plotting of interactable scatter points?
Indeed - you get a single line object with multiple data points, this is the main reason for the speedup. In your callback you c...

4 years ago | 0

Answered
How do I speed up plotting of interactable scatter points?
Try to use the vectorized version of plot to plot all the data points in a single function call rather than a loop, and also try...

4 years ago | 0

Answered
How can convert a .gdb (binary file) file to a .mat file ?
I am not familiar with a direct GDB-to-Matlab function. The easiest solution may be to store the data in CSV file rather than G...

4 years ago | 0

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How to speed up function approximation?
It may be useful to replace the string with a function handle. Also, setting the convergence tolerances to smaller values than...

4 years ago | 0

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Converting .fig file into 2D .dxf file
I think it may be simplest to save the figure as PDF and then use one of the multiple available converters from PDF to DXF.

4 years ago | 1

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Answered
Subscript in stackedplot DisplayLabels
You can access the individual stacked-axes' properties via the hidden sub-property Axes of the stackedplot's AxesProperties prop...

4 years ago | 4

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Answered
Improving Presentation of a Graph
Regarding output quality, esp. for EPS that you mentioned - many people found the export_fig utility useful for preparing public...

5 years ago | 0

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The following appears in the command window. What does it mean?java.lang.NullPointerException
This is an error that originates from Java code, typically concerning some GUI component that misbehavs or which does not handle...

5 years ago | 0

Answered
Matlab uitable column font size using html not working
HTML is only supported out-of-the-box in the legacy (Java-based) figures, not the new web-based (AppDesigner) uifigures. You ma...

5 years ago | 0

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Answered
Why does "Auto Width" feature not adapt to table axes size in GUIDE?
The "AutoWidth" setting of the uitable only sets the individual column's width based on its contents. It does not control the en...

5 years ago | 2

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How to add a sortable property to uitable within a classic figure.
My Java-based uitable utility on the Matlab File Exchange provides a sortable wrapper for the legacy uitable. The sorting functi...

5 years ago | 4

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Answered
How to open SLDD parameter editor dialog programatically?
try using the openvar function

5 years ago | 0

Answered
Why does fplot think my function is not vectorized
As far as I can tell (never mind exactly how), internally a check is made whether the output of fun(1:3) is exactly equaln to th...

5 years ago | 1

Answered
uigetfile with default filter
Adam Danz had the right idea, but missed a few key things. The FilterIndex field should indeed have influenced the filter select...

5 years ago | 3

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Answered
Unable to connect to Interactive Brokers after installed 2018a in new Laptop
Sometime in recent years, presumably around TWS API 9.70, IB changed their COM server's ProgID from 'TWS.TwsCtrl.1' to 'TWS.TwsC...

5 years ago | 0