[ros-users] Using a xacro parameter value in xacro macros

[Adolfo Rodríguez Tsouroukdissian]

I'd like to ask whether using a xacro parameter value in xacro macros is
allowed, because it is not clear from the docs [
http://www.ros.org/wiki/xacro]. Consider a simplified version of my file,
which fails on ros-latest from binary packages:

<xacro:parameter name="the_param" value="1" />

<xacro:macro name="macro1" >
  <foo>${the_param}</foo>
</xacro:macro>

<xacro:macro name="macro2" params="macro2_param" >
  <mechanicalReduction>${macro2_param}</mechanicalReduction>
</xacro:macro>


<xacro:macro1 />
     <!--
Fails -->
<xacro:macro2 macro2_param ="${the_param}" />  <!-- Fails -->

The two above lines raise a XacroException that states " Property wasn't
defined: u'the_param' " when xacro is run. Is this expected behavior?.

TIA,

Adolfo


-- 
Adolfo Rodríguez Tsouroukdissian, Ph. D.

Robotics engineer
PAL ROBOTICS S.L
http://www.pal-robotics.com
Tel. +34.93.414.53.47
Fax.+34.93.209.11.09
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