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
+
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