1 问题
rosrun rqt_plot rqt_plot
ggk@ggk-virtual-machine:~$ rosrun rqt_plot rqt_plot /usr/lib/python2.7/dist-packages/matplotlib/axis.py:1015: UserWarning: Unable to find pixel distance along axis for interval padding of ticks; assuming no interval padding needed. warnings.warn("Unable to find pixel distance along axis " /usr/lib/python2.7/dist-packages/matplotlib/axis.py:1025: UserWarning: Unable to find pixel distance along axis for interval padding of ticks; assuming no interval padding needed. warnings.warn("Unable to find pixel distance along axis " Traceback (most recent call last): File "/opt/ros/kinetic/lib/python2.7/dist-packages/rqt_plot/data_plot/mat_data_plot.py", line 107, in resizeEvent self.figure.tight_layout() File "/usr/lib/python2.7/dist-packages/matplotlib/figure.py", line 1754, in tight_layout rect=rect) File "/usr/lib/python2.7/dist-packages/matplotlib/tight_layout.py", line 349, in get_tight_layout_figure pad=pad, h_pad=h_pad, w_pad=w_pad) File "/usr/lib/python2.7/dist-packages/matplotlib/tight_layout.py", line 128, in auto_adjust_subplotpars fig.transFigure.inverted()) File "/usr/lib/python2.7/dist-packages/matplotlib/transforms.py", line 1775, in inverted self._inverted = Affine2D(inv(mtx), shorthand_name=shorthand_name) File "/usr/lib/python2.7/dist-packages/numpy/linalg/linalg.py", line 526, in inv ainv = _umath_linalg.inv(a, signature=signature, extobj=extobj) File "/usr/lib/python2.7/dist-packages/numpy/linalg/linalg.py", line 90, in _raise_linalgerror_singular raise LinAlgError("Singular matrix") numpy.linalg.linalg.LinAlgError: Singular matrix
2 原因
我们可以登录Matplotlib官网发现，kinetic中的python2.7和Matplotlib不兼容，并且不再支持Python2。
因此，我们需要寻找另一个可视化工具，PyQtGraph。
3 解决方法
安装PyQtGraph
我们下载之后安装就可以了。
4 deb文件安装方法
Ubuntu中deb文件详细安装方法：
1.首先打开电脑主界面。
2.然后找到“安装包”后双击。
3.最后点击“安装”键进行安装即可。
1）步骤1
2）步骤2
