How to convert monthly data to quarterly using IRIS toolbox?

How to convert monthly data to quarterly using IRIS toolbox? Any specific codes suggested? Thanks in advance.

[Walter Roberson]

It appears the toolbox might be https://iristoolbox.codeplex.com/

[Gohar Kartashyan]

Yes, I know that toolbox, I just need a specific code to convert the data from monthly to quarterly.

[Walter Roberson]

Most people do not know the toolbox or have the url. Posting the url makes it more likely that someone might take a look.

I myself have no idea how that toolbox works.

[Frantisek Brazdik]

IRIS is a free, open-source toolbox for macroeconomic modeling and forecasting in Matlab®, originally developed by the IRIS Solutions Team and currently maintained and supported by the Global Projection Model Network.

In a user-friendly command-oriented environment, IRIS integrates core modeling functions (including a flexible model file language with a powerful preparser, a variety of tools for simulation, estimation, forecasting and model diagnostics, practical techniques for judgmental adjustments, and more) with supporting infrastructure (such as data management, time series analysis, and reporting).

Here, is the toolbox main page

https://github.com/IRIS-Solutions-Team

and here is the toolbox itself

https://github.com/IRIS-Solutions-Team/IRIS-Toolbox

Answer 1

[Frantisek Brazdik]

Use function convert

m_ts = tseries(mm(1990,1):mm(2020,12),rand(1,372));
q_ts = convert(m_ts,'q')

convert accepts parameters to change the conversion type