Fit probability distributions to data
MATLAB工具条:在应用标签,下Math, Statistics and Optimization,,,,click the app icon.
MATLAB command prompt: EnterdistributionFitter
。
Data
— Data to import from the workspace通过从下拉列表中选择变量来指定要导入的数据。如果变量是矩阵,则该应用程序默认情况下将导入矩阵的第一列。要选择矩阵的不同列或行,请单击选择列或行。Alternatively, you can enter any valid MATLAB expression in the field.
审查
- 包含审查数据的变量指定the censoring data by selecting a variable from the drop-down list. If the variable is a matrix, the app imports the first column of the matrix by default. To select a different column or row of the matrix, click选择列或行。此参数是可选的。
频率
— Variable containing frequency data指定the frequency data by selecting a variable from the drop-down list. If the variable is a matrix, the app imports the first column of the matrix by default. To select a different column or row of the matrix, click选择列或行。此参数是可选的。
Data set name
- 数据集名称Enter a name for the data set or accept the default name.
管理数据集
— Manage previously imported data setsManage previously imported data sets. Click the data set of interest, then click the buttons below this pane to view the data (看法),设置bin规则(Set Bin Rules),,,,rename the data set (改名),,,,or delete the data set (删除)。
Data preview
- 数据的预览图显示从该变量中选择的预览图Datadrop-down menu.
适合名称
- 合适的名字输入拟合的名称或接受默认名称。
Data
— Data set to fit指定the data to fit by selecting a data set from the drop-down list.
Distribution
- 适合分配普通的
(默认)|Exponential
|威布尔
|非参数
|...
指定the distribution to fit by selecting a distribution name from the drop-down list.
Exclusion rule
- 数据排除规则通过从下拉列表中选择排除规则来指定规则以排除某些数据值。要填充此下拉列表,您必须首先通过单击来定义排除规则Exclude在应用程序的主窗口中。此参数是可选的
Plot
— Flag to plot fitted distribution指定which fit or fits to plot in the main window by selecting thePlotcheck box next to each fit. Clear thePlot复选框以删除图中的拟合。
conf界
- 绘制信心范围的标志如果you selectPlot对于特别合适的您,您可以选择conf界在主窗口中显示该拟合的置信界。清理conf界复选框从图中删除置信区间。仅当主窗口中的显示类型设置为Cumulative probability (CDF),,,,分位数(逆CDF),,,,幸存者功能, 或者累积危害。
Fit
- 适合评估从列表中选择一个或多个拟合进行评估。
Function
- 适合的可用功能Density (PDF)
(默认)|Cumulative probability (CDF)
|分位数(逆CDF)
|幸存者功能
|累积危害
|危险率
指定the type of probability function to evaluate from the drop-down list. Available probability functions include the probability density function (pdf), cumulative distribution function (cdf), quantile (inverse cdf), survival function, cumulative hazard, and hazard rate.
在x =
- 评估功能的值指定a numeric vector of values at which to evaluate the function. If you specifyFunction作为分位数(逆CDF),此字段名称更改为在p =然后您输入概率值的向量。
Compute confidence bounds
— Flag to compute confidence bounds选择Compute confidence bounds计算所选拟合的置信界。仅在指定时才启用此复选框Function作为Cumulative probability (CDF),,,,分位数(逆CDF),,,,幸存者功能, 或者累积危害。此参数是可选的。
Level
— Level for confidence bounds指定the level at which to compute the confidence bounds. This check box is enabled only if you specifyFunction作为Cumulative probability (CDF),,,,分位数(逆CDF),,,,幸存者功能, 或者累积危害。
Plot function
- 绘图功能的标志选择Plot functionto display a plot of the distribution function, evaluated at the points that you enter in the在x =字段,在新窗口中。此参数是可选的。
排除规则名称
— Name of exclusion ruleEnter a name for the exclusion rule.
Exclude sections
- 数值定义数据排除规则为数据指定数据的上限和上限。
Exclude graphically
— Define data exclusion rules graphically通过从该数据中选择一个从选择数据drop-down list and clickingExclude Graphically。一个互动的情节在一个新的窗口中打开,you can add lower or upper limits by clicking and dragging a boundary on the plot.
Existing exclusion rules
— List of existing exclusion rules从列表中选择现有的排除规则。您可以通过单击适当的按钮来复制,查看,重命名或删除排除规则。