How to make work macros work as values in parameters of psbarcode?

Question

TL;DR-

Works

\psbarcode{NODATA}{height=0.33 width=1.6 includecheck includetext}{code128}

But "parametrized", does not work as expected (produces big transparent output)

\def\h{0.33}
\def\w{1.6}
\psbarcode{NODATA}{height=\h width=\w includecheck includetext}{code128}

Reason: I'd love to allow user to specify those \h and \w as parameter on commandline following this solution.

To be more specific

Given : nodata.tex

\documentclass{standalone}
\usepackage{pst-barcode}
\usepackage{auto-pst-pdf} % pdflatex require -shell-escape option!!!
\begin{document}
\begin{pspicture}
\psbarcode{NODATA}{height=0.33 width=1.6 includecheck includetext}{code128}
\end{pspicture}
\end{document}

with

$ pdflatex -shell-escape nodata.tex && convert -density 300x300 nodata.{pdf,png} && display nodata.png

generated properly nodata.pdf and nodata.png:

However when I change psbarcode parameters to use \h \w, i.e. \psbarcode{NODATA}{height=\h width=\w includecheck includetext}{code128} it stops rendering, and results in big transparent output. Full working differently then expected code:

\documentclass{standalone}
\usepackage{pst-barcode}
\usepackage{auto-pst-pdf} % pdflatex require -shell-escape option!!!
\begin{document}
\begin{pspicture}
\def\h{0.33}
\def\w{1.6}
\def\d{DATA}
\psbarcode{\d}{height=\h width=\w includecheck includetext}{code128}
\end{pspicture}
\end{document}

Rendering same but smaller resolution (30x30), as it results big:

$ pdflatex -shell-escape nodata.tex && convert -density 30x30 nodata.{pdf,png} && display nodata.png

Big transparent output, for completeness:

Answer 1

The problem is that the key-value pairs are separated by spaces and in

\psbarcode{NODATA}{height=\h width=\w includecheck includetext}{code128}

there is no space after \h and \w, because they're ignored at tokenization time.

I tried with height={\h} or {height=\h} but neither works. A workaround is to define the macros with a parameter text:

\documentclass[border=4]{standalone}
\usepackage{pst-barcode}
\usepackage{auto-pst-pdf} % pdflatex require -shell-escape option!!!
\begin{document}
\begin{pspicture}
\def\h/{0.33}
\def\w/{1.6}
\psbarcode{NODATA}{height=\h/ width=\w/ includecheck includetext}{code128}
\end{pspicture}
\end{document}

Alternatively:

\documentclass[border=4]{standalone}
\usepackage{pst-barcode}
\usepackage{auto-pst-pdf} % pdflatex require -shell-escape option!!!

\newcommand{\psbarcodemacro}[3]{%
  \begingroup\edef\x{\endgroup
    \noexpand\psbarcode{#1}{#2}{#3}%
  }\x
}

\begin{document}
\begin{pspicture}
\def\h{0.33 }
\def\w{1.6 }
\psbarcodemacro{NODATA}{height=\h width=\w includecheck includetext}{code128}
\end{pspicture}
\end{document}

Answer 2

Let a space in the \def or use \space in \psbarcode

\documentclass[border=4,pstricks]{standalone}
\usepackage{pst-barcode}
\usepackage{auto-pst-pdf} % pdflatex require -shell-escape option!!!
\begin{document}

\begin{pspicture}(0,-0.2)(1.6in,0.5in)
    \def\h{0.33 }
    \def\w{1.6 }
\psbarcode{NODATA}{height=\h width=\w includecheck includetext}{code128}
\end{pspicture}

\begin{pspicture}(0,-0.2)(1.6in,0.5in)
    \def\h{0.33}
    \def\w{1.6}
    \psbarcode{NODATA}{height=\h\space width=\w\space includecheck includetext}{code128}
\end{pspicture}

\end{document}

from a command line you can run

xelatex --shell-escape "\def\d{DATA} \def\w{0.33} \def\h{1.6} \input{t.tex}"