Difference between revisions of "Igor Quick Reference"
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== Putting Data in Waves == | == Putting Data in Waves == | ||
| − | === | + | === Typing in a Table === |
#First you need to view the wave in a table. | #First you need to view the wave in a table. | ||
#* If the wave exists | #* If the wave exists | ||
| Line 38: | Line 38: | ||
=== As a list of values, in the command line === | === As a list of values, in the command line === | ||
| − | === Equations === | + | |
| + | === Waves in Equations === | ||
| + | |||
| + | ==Loading Text Data== | ||
= Graphs = | = Graphs = | ||
Revision as of 09:22, 2 August 2009
This page is intended to be a resource for the beginning and intermediate Igor user to quickly find help and tips about common tasks in Igor. Much of the information on this page is taken from the Igor "Getting Started" Introduction and Guided Tour, but is organized by topic so that the information is easy to find. Users of this page should also search (ctrl+f) for terms in case what they're looking for isn't found in the topic they expect.
This page was started by Ingrid Ulbrich.
Contents
Waves
Waves are vectors (arrays) in which data is stored. Point number counts from 0 (i.e., MyWave[0] is the first element of the wave).
Waves have inherent x values that are by default equal to the point number. If you display a wave, it is automatically plotted versus the x value (0, 1, 2, etc.). It is possible to change the inherent wave scaling (see setScale), or you can plot a y-wave versus an x-wave.
Helpful Wave Functions
- make /O /N=
- Data -> Make Waves...
- duplicate /O
- Data -> Duplicate Waves...
- rename
- Data -> Rename
- when the wave is in a table, right-click and choose Reanme
- setScale
- Data -> Change Wave Scaling...
Putting Data in Waves
Typing in a Table
- First you need to view the wave in a table.
- If the wave exists
- double-click on it in the Data Browser to view it in a table
- single-click on it in the Data Browser, then right click and select "Edit"
- from the pulldown menus, choose Window -> New Table and select the wave(s) from the dialog window
- If the wave doesn't exist
- make the wave from the command line
- Make a new table (from the pulldown menus, choose Window -> New Table and don't choose any existing waves). You can rename the waves later.
- If the wave exists
- Now you can type values directly into the table
- Note that you are editing the only copy of the wave.
- Note that Igor can only undo 1 action (it doesn't remember more than 1 action).
- Note that if you paste into the table, you might insert points instead of overwriting existing data.
As a list of values, in the command line
Waves in Equations
Loading Text Data
Graphs
Helpful Graph Functions
- display
- Windows -> New Graph
- From the Data Browser, single-click on a wave then right-click and choose "Display" (can't choose a "vs" wave)
- appendToGraph
- legend
- ModifyGraph
Modifying Traces
- Getting to the window
- Double-click on a trace
- Right-click on a graph and choose "Modify (tracename)..."
- Graph -> Modify Trace Appearance...
- Notes and Tricks
- You can change several traces at once by selecting multiple waves (ctrl+click).
Modifying Axes
Axes
- Getting to the window
- Double-click on an axis (look for vertical or horizontal double-arrow cursor)
- Graph -> Modify Axis
- Notes and Tricks
- You can make selections to any axis (or multiple axes at the same time) from the pulldown menu at the upper left of the window.
Adding Text
- Legend
- Text box
- "Drawn" text (less interactive than a text box)
Adding Lines
Using Cursors
Strings
Helpful String Functions
Variables
Helpful Variable Functions
- NVAR
- NVAR_exists
