Working with a Picture

When you use the picture operator to display an image, Mathcad provides a Picture toolbar to alter the image. With this toolbar, you can modify the orientation, brightness and contrast, or magnification of an image. You can also use the toolbar to select all or part of the picture for copying to the clipboard.

To access the toolbar, click on the picture. Mathcad outlines the picture with hash marks, and displays the Picture toolbar.

sample picture   The picture toolbar

Using the Picture toolbar

The Picture toolbar allows you to manipulate an image in many ways.

Reorient the image

rotate image buttons

Rotate the image counter-clockwise or clockwise. Clicking the button successively undoes the action.

flip image buttons

Flip the image about either the horizonal or vertical axis.

transpose image button

Transpose the image. This flips the image about the diagonal that runs from the upper left corner of the image to the bottom right corner.

reset orientation button

Return the image to its original orientation.

Zoom in and out

zoom buttons

Change the magnification so you can see either a smaller portion of the image in greater detail, or more of the image in less detail.

zoom to window button

Adjust the magnification to display the entire image within the window.

reset zoom to default button

Return the magnification to its original setting.

Adjust the image display

adjust brightness/contrast button

Increase or decrease the brightness and contrast for the image.

reset brightness/contrast button

Reset the brightness and contrast to their original levels.

adjust grayscale colormap button

Adjust the grayscale colormap. (Available for pictures read in as grayscale images only.)

reset grayscale colormap button

Reset the grayscale colormap to its original settings. (Available for pictures read in as grayscale images only.)

Select all or part of the image

select image button

Select the entire image, even if it extends beyond the display window.

selection rectangle button

Create a selection rectangle. Click the mouse to establish one corner and the drag and release the mouse to define the rectangle.

select pixel button

Select an individual pixel within the image.

select column button

Select a column of pixels.

select row button

Select a row of pixels.

Copy the selected portion of the image

copy selection button

Copies the selected portion of the image to the clipboard as a bitmap.

Pan the image within the window

move the image within the display window

Move the image within the display window to view a different portion of the image.

Redisplay the image

reset image to original condition button

Reset all image settings to their original values.

redisplay image button

Redisplay the image.

Pixel data

pixel data

The bottom two rows of the tool bar display the x-y coordinates of the cursor, and the RGB values at those coordinates.

Note:

Using the Properties dialog box

You can change your color model or output selected portions of the displayed matrix by making appropriate choices from the Picture Properties dialog box.

To open the dialog, right-click on the image and select Properties from the menu. The following options are available:

Note:

QuickSheet