Download Extrema User's Guide

Table of Contents
GETTING STARTED .....1
About This Guide............. 1
Conventions used in this guide ... 2
Installing Extrema ............ 2
Running Extrema............. 2
DATA INPUT .............4
Data Representation........ 4
Addressing parts of arrays .......... 5
Constants .................................... 6
Expressions ................................. 6
Reading Data From Files. 6
Text files ...................................... 7
Binary files ................................... 7
Generating Data .............. 7
Sequences................................... 7
Functions ..................................... 8
Interpolating Data ........................ 8
DRAWING GRAPHS ....9
Graphics sub-windows .... 9
Pre-defined windows ................... 9
One-dimensional graphs 10
Two-dimensional graphs 11
Line graphs................................11
Scatterplots................................12
Histograms and bar charts..14
Three-dimensional graphs
...................................... 15
Contour Plots.............................16
Density plots ..............................16
Surface plots..............................17
Four+ dimensional graphs
...................................... 17
Graphing two 3-D functions on the
same drawing ............................17
Multiple plots on the same drawing
...................................................18
Tile numerous graphs on the
same drawing ............................18
Draw two sets of data on the
same graph at the same scale
............................................19
Draw two sets of data on the
same graph, but at different Yscales .................................20
CUSTOMIZING GRAPH
PRESENTATION .......23
Colors ............................ 24
Default Drawing Color............... 25
Plotting Symbols............ 25
Line type ........................ 27
Line width ...................... 27
Text................................ 28
Axis Labels .................... 29
Graph Legend................ 29
Graph Axes.................... 31
Scaling ...................................... 31
Tics............................................ 32
Logarithmic axes ....................... 33
Axis placement.......................... 34
DATA ANALYSIS
EXAMPLES .............36
Operators....................... 36
Functions ....................... 37
Fitting............................. 37
Smoothing ................................. 38
Fitting to a function.................... 38
Fitting different data segments
to different functions ...........40
Binning........................... 41
Interpolation................... 41
2-D interpolation .................42
Integration...................... 43
Other functions .............. 44
Data Selection ............... 44
OUTPUT.................47
Printing graphs .............. 47