Graphs

The Sheet can have an area for plotters on the right. Plotters are containers for graphs of functions. They can be heavily configured. You can see that plotters have background, axis and grid. They also have centre and scale concerning the view. Each plotter has a name on top and a button to configure its properties. You can change the point of view in real time by dragging the mouse or rolling the mouse wheel over the plotter.

There are bigger versions of plotters, too. Click on the arrow at the bottom-left to see them. In the bigger version, there are sliders to change the point of view. Moreover, the larger 2-D plotter has a crosshair and displays, at the bottom right, the coordinates of the selected point. This is useful for obtaining information about the drawn functions.

You can put things in the plotter by using the Plot action over a formula. If there is no plotter in the sheet, a new one will be created. Otherwise, the graph object will be placed in an existing plotter. Graph objects can also be heavily configured. Each graph object has label, color and width, and maybe border, interior and transparency. These properties can be configured by clicking the Plot action icon located next to the formula. You can also move one graph object from one plotter to another through the configuration pop-up next to the Plot icon.

Furthermore, you can create several objects using top-bar actions or drawing by hand through handwritten geometry recognition. You can configure them as you did in the sheet. See Graph for background.

2-D

You can plot in the Cartesian plane:

• functions, of one variable
• equations, of two variables, that are implicit functions
• inequations, of two variables, that are regions
• lists of them
• regions, defined by command region()

You can also plot elements of ODEs, as explained in the Calculus section.

 

3-D

In the Cartesian space, you can plot:

• functions, of two variables
• linear equations, of three variables, which are planes
• lists of them

Plotter settings

You can change some plotter settings by clicking on the settings button in the top-right corner of the plotter's top bar. The following options you can modify.

All these settings can also be changed through the sheet. The attributes() command will allow you to see them and the notation you have to use to modify the default values.

Thus, you will be able to create plotters as follows, defining their attributes by hand.

Conversely, for 3D plotters, you will need to use the attributes3d() command to get the associated details.

Thus, you will be able to create plotters as follows, defining their attributes by hand.

Plot settings

It's also possible to change the settings for a specific plot by clicking the object's graph. You will see a bar below it as follows.

The options you can modify (from left to right) are the following:

• Fix label: choose whether or not the function's label is fixed.
• Line width: define the line width.
• Line style: define the line style (solid, dashes, dots, or dots and dashes).
• Line colour: define the line colour.
• Delete: erase the plotted object.

Finally, you can also change the location of a particular plot by clicking on the graph icon next to the function that is being represented. A pop-up window as follows will appear on your screen.

From now on, you can download the graphic plotter as a square PNG of your desired size. Take advantage of this new CalcMe feature to save the generated images directly to your device.

 

Graph

An object in CalcMe is plotted in Graph, but Graph is much more than a simpler viewer; we can build segments, vectors, lines, and conic sections. Moreover, handwritten geometry recognition enables us to draw by hand, as we do on paper, and to translate our drawings into mathematical objects.

To see more details, take a look at its dedicated page.

 

Examples