A POW Graph consists of a number of Curves and Images drawn within a given rectangular region. The Edit Graph item in the Edit menu brings about a dialog box from which one can control what objects are drawn, how they are displayed, and how the graph itself is drawn...
The dialog box consists of 3 major regions. The top portion controls the contents of the current (or new) graph. The box on the left lists the objects currently in the graph. The box on the right lists all the available objects which are not in the graph. In both boxes, the type of each object (image or curve) will indicated in parentheses after the objects' names. The Add and Remove buttons in between allows one to move the selected objects between the two lists. The name of the graph being editted is given below the left box. This can be changed if one wants to create a new graph rather than modify the current one. The Edit Objects button under the right box opens up another dialog box which allows one to edit the data structures which define Curves and Images.
The second region, below the graph contents section, contains the editable display options for the graph and graph objects. At its top are two radio buttons by which one indicates whether one wants to view/edit the display options for the graph as a whole or the specific object selected in the graph contents box.
Graph
Axes: The two sets of entry boxes at the top of the options region contain the values used for the axis label, bounding coordinates (Min/Max), and position unit for the X and Y axes. Any or all of them may be NULL which tells POW to use the default values. In the case of the bounding box, default values will be determined by the minimum values required to display all the graph's contents. For Units, a NULL value will indicate not to list a units in the label axes. Clicking the Reset Min/Max button sets all the bounding box values to NULL.
Ticks: Use the slidebar to indicate approximately how many tick marks should be drawn (and labeled) on the graph. At the far left, only 1 or 2 will be drawn on each axis. At the far right, about 30 may be drawn. If the Grid Lines checkbox is selected, lines will drawn on the graph, tracing the path of each tick mark coordinate. One can control the Color and line Style (solid, dashed, etc) of these lines.
Selected Object
Currently, only Curves have display options which can be modified. A future release will allow one to alter the colormaps of Images.
Color: Select the color in which one wants the current curve draw.
Points: The checkbox preceding this item indicates whether the individual points of the curve should be drawn. The points can be drawn as any of the 6 listed shapes. The size of the points can either be fixed at a constant size indicated by the slidebar, or drawn with widths/heights indicating the X and Y error bars. If there are X/Y error bars but the points are drawn in a fixed style, the error bars will be indicated by horizontal/vertical lines centered on the point. Points can be Filled or just drawn in outline.
Lines: The checkbox preceding this item indicates whether data points will be connected with a continuous line. The line can be of several patterned styles or widths. The points can also be connected directly (Normal) or in a stair-step pattern (Histogram).
At the very button of the dialog box are 3 buttons. Create Graph will create a graph based on the parameters listed. If a graph with the name given in the top region of the dialog box already exists, it will be replaced. Otherwise a new graph will be created. The Reload Info button will reset the parameter options and object lists based on the currently selected graph (for when one either wants to revert to the original parameters, or if one selected a new graph, or if new objects were created). The Exit button closes the dialog box. Any changes will be lost if a graph wasn't created before exitting.