diff options
Diffstat (limited to 'silx/gui/plot/_utils/ticklayout.py')
| -rw-r--r-- | silx/gui/plot/_utils/ticklayout.py | 20 |
1 files changed, 13 insertions, 7 deletions
diff --git a/silx/gui/plot/_utils/ticklayout.py b/silx/gui/plot/_utils/ticklayout.py index 5f4b636..6e9f654 100644 --- a/silx/gui/plot/_utils/ticklayout.py +++ b/silx/gui/plot/_utils/ticklayout.py @@ -109,7 +109,7 @@ def ticks(vMin, vMax, nbTicks=5): """Returns tick positions and labels using nice numbers algorithm. This enforces ticks to be within [vMin, vMax] range. - It returns at least 2 ticks. + It returns at least 1 tick (when vMin == vMax). :param float vMin: The min value on the axis :param float vMax: The max value on the axis @@ -117,13 +117,19 @@ def ticks(vMin, vMax, nbTicks=5): :returns: tick positions and corresponding text labels :rtype: 2-tuple: list of float, list of string """ - start, end, step, nfrac = niceNumbers(vMin, vMax, nbTicks) - positions = [t for t in _frange(start, end, step) if vMin <= t <= vMax] + assert vMin <= vMax + if vMin == vMax: + positions = [vMin] + nfrac = 0 + + else: + start, end, step, nfrac = niceNumbers(vMin, vMax, nbTicks) + positions = [t for t in _frange(start, end, step) if vMin <= t <= vMax] - # Makes sure there is at least 2 ticks - if len(positions) < 2: - positions = [vMin, vMax] - nfrac = numberOfDigits(vMax - vMin) + # Makes sure there is at least 2 ticks + if len(positions) < 2: + positions = [vMin, vMax] + nfrac = numberOfDigits(vMax - vMin) # Generate labels format_ = '%g' if nfrac == 0 else '%.{}f'.format(nfrac) |