Evaluation of Graphics Packages for PCs
Plotting Options
Feature | Stanford Graphics | DeltaGraph | Origin | Sigmaplot |
Ignore missing observations | Yes | Yes | Yes | Yes |
Extrapolation | No | Yes | Yes | No |
Interpolation | ||||
Linear | Yes | Yes | Yes | Yes |
Spline | Yes | Yes | Yes | Yes |
Parametric | Yes | No | No | Yes |
Error Bars | ||||
From data | Yes | Yes | Yes | Yes |
Percent errors | No | Yes | Yes | No |
Plus/minus constant | No | Yes | No | No |
Standard error | Yes | Yes | No | Yes |
Standard deviation | Yes | Yes | Yes | Yes |
Positive, negative, or both | Yes | Yes | Yes | Yes |
Bidirectional error bars | Yes | Yes | Yes | Yes |
Asymmetrical error bars | Yes | Yes | Yes | Yes |
Curve Fitting | ||||
Linear | Yes | Yes | Yes | Yes |
Polynomial (2nd order or higher) | Yes | Yes | Yes | Yes |
Exponential | Yes | Yes | Yes | Yes |
Logarithmic | Yes | Yes | Yes | Yes |
Hyperbolic | Yes | Yes | Yes | Yes |
Total fit functions available | 7 | ~20 | claims 200 | > 100 |
User Defined Fits | No | Yes | Yes | Yes |
Plot directly mathematical functions | Yes | No | Yes | No |
Plot confidence intervals for mean y (or y) as 95% and 99% confidence lines | No | No | Yes | Yes |
Graph curve data to file | Yes | Indirectly | Yes | Yes |