In this first nodeworks tutorial, we’ll test your installation of nodeworks by making the simple sine and cosine wave plot. To begin, launch a new session of nodeworks from a terminal with:
Step 1: Add the nodes¶
First we will add four nodes: a
Range node, two
Trig nodes and a
Plot node. To add a node to the sheet, right click on the Nodeworks canvas
and a context menu will pop up. Navigate to Add Node at the bottom, then to
numpy and then to click on
Range as shown below.
You can delete a node by highlighting it (either left click on it or drag a box surrounding it) and pressing delete on the keyboard. Highlighted nodes can also be moved around the sheet by dragging while holding left click. The sheet itself can be panned over by holding and dragging the wheel button. A map of the sheet is shown in the upper left-hand corner.
Change the range step size to 0.1 for a smoother curve. The
Trig node is
also located in the numpy node group and can be added in the same way or, since
we know the name of the node we want to add, you can shortcut to the node
library short by left clicking on the screen where you want to add the node and
typing the node name directly on the keyboard. A shortened dropdown list will
appear with nodes matching the search, as shown below. Set the operation of the
Trig node to cos. Finally, add the
Plot node which is located in
Ctrl+c and Ctrl+v shortcut keys could also be used to copy and paste a
Step 2: Connect the nodes¶
The four nodes need to be connected to form a process or workflow. Left click on
the output terminal of the
range. Drag the connection over
input terminal of either of the
Trig nodes. Make a similar
connection to the other
Trig node. Connect both of the
output terminals to the
y input terminal of the
Plot node. The final
connection is made from the
range terminal to the
`x input terminal of
Step 3: Run the sheet¶
Run the sheet by pressing the Run button on the top toolbar (third from left).
The sheet should look similar to the above figure. The sheet can be saved by
Save button (second toolbar button on the left) which creates a
node chart (*.nc) file that can be reopened in the Main Menu (leftmost toolbar
This simple tutorial only scratches surface of the nearly unlimited possibilities that Nodeworks offers. If you are interested in learning more advanced features of Nodeworks or even developing your own nodes or interfaces with other programs, please see our Developers section. If you are most interested in the capability of Nodeworks to interface with the MFiX GUI, please see the MFiX Interface section. In addition, we release collections of nodes or specialized nodes called Toolsets which contain more advanced examples on their use and functionality. Please direct any questions or feedback to the mailing list.
Thank you for your interest in Nodeworks. Happy Noding!