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summer_2019:glowscript_tips [2019/08/07 17:34] wellerd |
summer_2019:glowscript_tips [2019/08/13 00:27] (current) wellerd |
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| * **Printing values and text** - The ''print()'' command will output any value called from within the parentheses. You can print variables and attributes from your code as a way of checking what numbers the simulation has calculated. The following code creates a conical object named ''IceCreamCone'', and the ''print(IceCreamCone.size.x)'' command prints the x-component of the object's size attribute. If you want to print text, it must be transformed into a "string" of letters by using quotation marks within the ''print()'' command. | * **Printing values and text** - The ''print()'' command will output any value called from within the parentheses. You can print variables and attributes from your code as a way of checking what numbers the simulation has calculated. The following code creates a conical object named ''IceCreamCone'', and the ''print(IceCreamCone.size.x)'' command prints the x-component of the object's size attribute. If you want to print text, it must be transformed into a "string" of letters by using quotation marks within the ''print()'' command. | ||
| <code> | <code> | ||
| - | IceCreamCone=cone(pos=vec(10,20,0), axis=vec(5,0,0), size=vec(12,3,3) | + | IceCreamCone=cone(pos=vec(0,0,0), axis=vec(0,-5,0), size=vec(3,1,1)) |
| - | print(IceCreamCone.size.x) | + | print("Ice cream cone length:", IceCreamCone.size.x) |
| print("Two scoops of butter pecan please!") | print("Two scoops of butter pecan please!") | ||
| </code> | </code> | ||
| ==== Graphing ==== | ==== Graphing ==== | ||
| - | * **Graphs** - the most convenient graphs in Glowscript utilize the ''gcurve'' command which plots a series of connected data points. In the following code, ''MyGraph1'' is needed to set up the graphing window with its various features. The line with ''HeightGraph'' names a particular data-set that will be represented as a series of connected data points. Lastly, within the while loop, the ''HeightGraph.plot'' command is used to ''plot'' data points along time for our specified data-set. | + | * **Graphs** - the most convenient graphs in Glowscript utilize the ''gcurve'' command which plots x-y data points as a scatterplot and connects the points with a line. In general, Three lines of code are needed to graph in Glowscript... |
| + | - A line above the while loop which creates the axes and titles of the graph (line 3 in the picture below). | ||
| + | - A line above the while loop which tells the program what you are about to graph (line 4 in the picture below). | ||
| + | - A line inside of the while loop which plots the respective x-y data point for that iteration of the while loop (line 19 in the picture below). | ||
| + | {{:summer_2019:python-trinket-physics.png?400|}} | ||
| + | |||
| + | * **Another graphing example** - In the following code, ''MyGraph1'' is needed to set up the graphing window with its various axes titles, minimum and maximum boundaries, and other features. The line with ''HeightGraph'' names a particular data-set that will be represented on our scatterplot. Lastly, **within the while loop**, the ''HeightGraph.plot(t,Cart.pos.y)'' command is used to ''plot'' data points for our specified data-set (''t'' will be on the x-axis and ''Cart.pos.y'' will be on the y-axis). | ||
| <code> | <code> | ||
| MyGraph1 = graph(title='Height vs Time', xtitle='Time (s)', ytitle='Height (m)', fast=False) #Name our graph and set some features | MyGraph1 = graph(title='Height vs Time', xtitle='Time (s)', ytitle='Height (m)', fast=False) #Name our graph and set some features | ||
| Line 41: | Line 47: | ||
| Cart.pos=Cart.pos+vec(0,1,0)*dt | Cart.pos=Cart.pos+vec(0,1,0)*dt | ||
| | | ||
| - | HeightGraph.plot(t,Cart.pos.y) # This line plots data points as the program iterates | + | # This line plots data points as the program iterates |
| + | HeightGraph.plot(t,Cart.pos.y) # t will be on the x-axis and Cart.pos.y will be on the y-axis | ||
| | | ||
| t=t+dt | t=t+dt | ||