From 1fb6c19d605825c2990dabebf9adf9e841c40c01 Mon Sep 17 00:00:00 2001 From: Rory Yorke Date: Sun, 11 Apr 2021 13:18:59 +0200 Subject: [PATCH] IPython LaTeX output only generated for small systems StateSpace._repr_latex_ now returns None for systems whose size is greater than new config variable statesp.latex_maxsize. System size is the largest dimension of the partitioned system matrix. statesp.latex_maxsize is 10. --- control/statesp.py | 16 ++++++++++++---- control/tests/statesp_test.py | 26 ++++++++++++++++++++++++++ 2 files changed, 38 insertions(+), 4 deletions(-) diff --git a/control/statesp.py b/control/statesp.py index c12583111..653ea062a 100644 --- a/control/statesp.py +++ b/control/statesp.py @@ -75,6 +75,7 @@ 'statesp.remove_useless_states': False, 'statesp.latex_num_format': '.3g', 'statesp.latex_repr_type': 'partitioned', + 'statesp.latex_maxsize': 10, } @@ -517,19 +518,26 @@ def fmt_matrix(matrix, name): def _repr_latex_(self): """LaTeX representation of state-space model - Output is controlled by config options statesp.latex_repr_type - and statesp.latex_num_format. + Output is controlled by config options statesp.latex_repr_type, + statesp.latex_num_format, and statesp.latex_maxsize. The output is primarily intended for Jupyter notebooks, which use MathJax to render the LaTeX, and the results may look odd when processed by a 'conventional' LaTeX system. + Returns ------- - s : string with LaTeX representation of model + + s : string with LaTeX representation of model, or None if + either matrix dimension is greater than + statesp.latex_maxsize """ - if config.defaults['statesp.latex_repr_type'] == 'partitioned': + syssize = self.nstates + max(self.noutputs, self.ninputs) + if syssize > config.defaults['statesp.latex_maxsize']: + return None + elif config.defaults['statesp.latex_repr_type'] == 'partitioned': return self._latex_partitioned() elif config.defaults['statesp.latex_repr_type'] == 'separate': return self._latex_separate() diff --git a/control/tests/statesp_test.py b/control/tests/statesp_test.py index 71e7cc4bc..459b2306f 100644 --- a/control/tests/statesp_test.py +++ b/control/tests/statesp_test.py @@ -1063,3 +1063,29 @@ def test_xferfcn_ndarray_precedence(op, tf, arr): ss = ct.tf2ss(tf) result = op(arr, ss) assert isinstance(result, ct.StateSpace) + + +def test_latex_repr_testsize(editsdefaults): + # _repr_latex_ returns None when size > maxsize + from control import set_defaults + + maxsize = defaults['statesp.latex_maxsize'] + nstates = maxsize // 2 + ninputs = maxsize - nstates + noutputs = ninputs + + assert nstates > 0 + assert ninputs > 0 + + g = rss(nstates, ninputs, noutputs) + assert isinstance(g._repr_latex_(), str) + + set_defaults('statesp', latex_maxsize=maxsize - 1) + assert g._repr_latex_() is None + + set_defaults('statesp', latex_maxsize=-1) + assert g._repr_latex_() is None + + gstatic = ss([], [], [], 1) + assert gstatic._repr_latex_() is None + pFad - Phonifier reborn

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