求问关于Swarm产生柱状图的问题 多谢大家了！！

mushroom89

各位好，我想请教一下，我想产生一个柱状图，但是在buildActions（）好像selector那有问题，说
There was an error in creating a Selector for method step in Class swarm.analysis.EZDistributionImpl.
swarm.analysis.EZDistributionImpl.step returns null
+ `: ~6 `9 ?9 G2 w5 C6 ]The process will be terminated.
(Tcl -eval couldn't read file "F:Swarm-2.2-java/lib/tcl8.4//word.tcl": no such file or directory
    while executing
"source F:\Swarm-2.2-java/lib/tcl8.4//word.tcl"
: x8 `- B: z3 o/ I1 ewhile evaluating: source F:\Swarm-2.2-java/lib/tcl8.4//word.tcl
*** event raised for warning: WarningMessage
# D- w8 @3 Z. Q1 q*** function: _i_ProbeMap__addProbe_(), file: /src/swarm/src/objectbase/ProbeMap.m, line: 606
Attempt to add null probe
*** execution continuing...
; }' g% w0 s& R5 n请问第一个参数应该是什么呢 我设的是ezdist（一个EZDistribution object），
请问是怎么回事呢？多谢大家了~