nPercentile rendering fails

[Nicholas Leskiw]

Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/django/core/handlers/base.py", line 111, in get_response
    response = callback(request, *callback_args, **callback_kwargs)
  File "/opt/graphite/webapp/graphite/render/views.py", line 104, in renderView
    seriesList = evaluateTarget(requestContext, target)
  File "/opt/graphite/webapp/graphite/render/evaluator.py", line 10, in evaluateTarget
    result = evaluateTokens(requestContext, tokens)
  File "/opt/graphite/webapp/graphite/render/evaluator.py", line 21, in evaluateTokens
    return evaluateTokens(requestContext, tokens.expression)
  File "/opt/graphite/webapp/graphite/render/evaluator.py", line 29, in evaluateTokens
    return func(requestContext, *args)
  File "/opt/graphite/webapp/graphite/render/functions.py", line 1286, in nPercentile
    name = 'nPercentile(%s, %.1f)' % (n, s_copy.name, perc_val)
TypeError: float argument required, not str

[Josh Braegger (rckclmbr)]

I ran into this as well, it's fixed in development. For the latest stable release (0.9.10), just change line 1383 of "render/functions.py" to:

name = 'nPercentile(%.1f, %s)' % (n, s_copy.name)