SAS/SPECTRAVIEW Software User's Guide

Annotating an Image

SAS/SPECTRAVIEW provides the following types of annotations that you can include for an image in the Volume window and the surface windows.

Setting Axis Labels and Tick Marks in the Volume Window

In the Volume window, you can display axis labels, which are the variable names associated with the X, Y, and Z axes, and major and minor tick marks. To display or hide these labels in the Volume window:

Select the [Axis] global button, then [Vol].
Select [Major] to set major tick marks or [Minor] to set minor tick marks. By default, major tick marks are set to 1, which displays variable names but no tick marks. To display minor tick marks, major tick marks must be displayed.
Set the tick marks by dragging the three sliders to specify the number of tick marks for the X, Y, and Z axes. (The value you specify appears to the left of the slider, and the tick marks appear on the appropriate axis in the Volume window.) To hide variable names, set the slider to 0. To include variable names plus major tick marks, move the slider to a number greater than 1; for example, 2 displays variable names with two tick marks along the axis.
The maximum value for each major tick slider equals the number of unique data values for the respective axis. If you categorized the data, the maximum value equals the number of categories specified for that axis. The maximum value for the minor tick sliders is 10.
To specify where the variable name and tick marks for an axis are to appear, position the hand cursor in the Volume window so that it points to the axis line you want, and click the left mouse button. For example, if you have rotated an image and the variable name and tick marks for the X axis are at the back of the image, you can click the top front or bottom front X axis lines of the bounding box; the labels appear along the line you clicked.
The default color for both variable names and tick marks is black. To specify a different color, select [Palette], then either [Minor tick] or [Major tick] to assign a color to the tick marks or [Label] to assign a color to the variable names.
Adjust the RGB sliders. As you move the sliders, the specified color appears in the square at the left, and the item changes color in the Volume window. You can also select a color chip, located below the RGB sliders.

Volume Window with Axis Labels

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Note that you can define axis labels and tick marks regardless of whether the bounding box is on or off.

Setting Axis Labels in the Surface Windows

In the surface windows, you can display axis labels, which are the variable names associated with the X, Y, and Z axes, and the minimum and maximum values. To display or hide labels in the surface windows:

Select the [Axis] global button, then either [Xz], [Yz], or [Xy] to specify the surface window.
By default variable names and values are displayed. To hide variable names, deselect [Label]. To hide values, deselect [Value].
The default color for both variable names and values is black. To specify a different color, select [Palette], then [Label].
Adjust the RGB sliders. As you move the sliders, the specified color appears in the square at the left, and the item changes color in the Volume window. You can also select a color chip, located below the RGB sliders.

Surface Window with Axis Labels

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Note that you can define axis labels and values for surface window images regardless of whether the axes lines are on or off.

Setting the Bounding Box in the Volume Window

By default in the Volume window, the software displays a bounding box, which is a set of lines that outline the volume grid representing the loaded data. To include or hide the bounding box:

Select the [Anno] global button, then [Box].
To turn off the bounding box, select [Off]. (To display the bounding box, select [On].)
By default, the bounding box is multicolored. To specify one color, select [Palette], then [Bounding box].
Select [User-defined] to specify a color for the bounding box. Adjust the RGB sliders. As you move the sliders, the specified color appears in the square at the left, and the item changes color in the Volume window. You can also select a color chip, located below the RGB sliders. (To return to the default multiple colors, select [Default].)

Volume Window without Bounding Box

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Setting Axes Lines in the Surface Windows

When you display a two- or three-dimensional image in a surface window, the software by default provides axes lines. To set axes lines in the surface windows:

Select the [Axis] global button, then either [Xz], [Yz], or [Xy] to specify the surface window.
By default axes lines are displayed. To hide them, deselect [Axis] from the menu of buttons, which displayed when you selected the [Axis] global button.
The default color for axes lines is black. To specify a different color, select [Palette], then [Bounding box].
Select [User-defined] to specify a color for the lines. Adjust the RGB sliders. As you move the sliders, the specified color appears in the square at the left, and the item changes color in the Volume window. You can also select a color chip, located below the RGB sliders. (To return to the default, select [Default].)

Surface Window without Axes Lines

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Setting Headers in the Surface Windows

When you display an axis cutting plane view in a surface window, the software by default provides a window header that specifies the variable name for the axis and the value for the cutting plane's location. To display or hide headers in the surface windows:

Select the [Axis] global button, then either [Xz], [Yz], or [Xy] to specify the surface window.
By default headers are displayed. To turn off headers, deselect [Header].
The default color for headers is black. To specify a different color, select [Palette], then [Label].
Adjust the RGB sliders. As you move the sliders, the specified color appears in the square at the left, and the item changes color in the Volume window. You can also select a color chip, located below the RGB sliders.

YZ Surface Window with Header Turned Off

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Including Text

You can add lines of text to a selected window, for example, to annotate it with a title or the current value of a variable. Each text line can contain one or more words or special characters, and you can include as many lines as you need. You can add simple text or a substitution string.

A substitution string can display the current value for a variable when you specify the variable name preceded by an ampersand (&). For example, for a variable named PAYMENT, entering Payment Amount=$&payment as the text line will display the current value for the variable PAYMENT, that is, Payment Amount=$1500.00. For the axis variables, the software displays the value for the axis cutting plane's current location. For the response variable, the software displays the response value at the intersection of the three cutting planes.

To add text:

Select the [Anno] global button, then [Text].
Specify the window by selecting [Xz], [Yz], [Xy], or [Volume]. Note that the selected window must be visible.
Select [Add]. In the text window, the software displays a message asking you to enter text, and the cursor changes to the input cursor.
In the text window, type the text or text string and press Enter. For example, as shown in Volume Window with Text, you might enter the title Mortgage Data. By default, the first text line is centered at the top of the selected window. The second text line is centered below the first, and so on.
To manipulate added text:
- To move text, select [Move], position the cursor on the text that you want to move, press the left mouse button, and drag to the appropriate position.
- To change the size of text, select [Scale], position the cursor on the text that you want to scale, press the left mouse button, and drag left (smaller) or right (larger).
- To delete text, select [Del], position the cursor on the text that you want to delete and click the left mouse button.
The default color for text is black. To specify a different color, select [Palette], then [Text].
Adjust the RGB sliders. As you move the sliders, the specified color appears in the square at the left, and the item changes color in the Volume window. You can also select a color chip, located below the RGB sliders.

Volume Window with Text

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Including a Response Legend

You can add a legend of response values and associated colors to a selected window. To include a response legend:

Select the [Anno] global button, then [Legend].
Specify the window by selecting [Xz], [Yz], [Xy], or [Volume].
Specify whether you want to display the legend horizontally or vertically by selecting [Hor] or [Ver], as shown in Volume Window with Response Legend.
To manipulate the legend:
- To move the legend, select [Move], position the cursor on the legend, press the left mouse button, and drag to the appropriate position.
- To change the size of the legend, select [Scale], position the cursor on the legend, press the left mouse button, and drag left (smaller) or right (larger).
- To remove a displayed legend, select [Off].
The default color for the legend's labels, which are the response variable name and minimum and maximum values, is black. To specify a different color, select [Palette], then [Label].
Adjust the RGB sliders. As you move the sliders, the specified color appears in the square at the left, and the item changes color in the Volume window. You can also select a color chip, located below the RGB sliders.

Volume Window with Response Legend

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