VizStruct Tutorial (1)

 

Before Start		Save iris.txt to your local hard drive and remember its location
Start		Click "Browse" button Select iris.txt Click "Upload Data File" button Screen shot
Upload		An upload success screen appears. Since no missing values and no leading class labels in iris.txt, just click "Process Data Set" Screen shot
Plot Types		Four types of visualization can be selected. Default is "Basic Plots" Screen shot
Basic Plot		Plot settings: User Input  VizStruct can display either the loaded data loaded data plus user additional input data. Field "Display" will control the plot data. There are two ways user can input data: Type in "Data Points" field. The format for input data is delimed by ', ' and '@'. For example, adding 3 more data points for iris data 2,9,7,1@5,6,1,0@3,5,1,5 Load a separate file. The format should be the same as input data file. No leading label column is allowed. No missing values are allowed. VizStruct will not fill the missing values Plot Type there are 8 subtypes of plot Parameters Plot mode: symbols or numbers Harmonic: from 1 to number of dimensions-1, default is 1 Class Delim: tell VizStruct how much data in each class. The delim is ','. For iris data, the class delim string is 50,50,50. The sum of these numbers must equal the length of the data Font Size: size of font or symbol used in the plot Plot Color: mono or color display, default is color Aspect: aspect of the x-y axis, for Cartesian plot and harmonic matrix only Preprocess: Normalization: by row-wise or column-wise. Center: newval = (val-mean)/mean Local: newval = (val-min) / range Global: min->0, max->1 Sort Dim: rearrange dimension orders to make the first harmonic the dominant component Class Boundary: Boundary: how boundaries are shown, lines or filled regions Mark Step: how detail boundaries are determined. The larger the number, the more detailed boundaries set but requires more time
Try Yourself		Colored Catesian plot Set "Plot Mode" '3- numbers (1-n) Set "Class Delim" '50,50,50' Set "Font Size" '8' Set "Aspect" 'square' Screen shot of setting Screen shot of plot Colored Catesian plot with user input data and boundaries Click "Default Values" button to reset values Set "Data Points" '2,9,7,1@5,6,1,0@3,5,1,5' Set "Display" '2. user data points' Set "Class Delim" '50,50,50' Set "Boundary" 'boundary only' Set "Mark Step" '150' Screen shot of setting Screen shot of plot
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