Leave a Review DataAnalysis
Extrapolation a pain
I Love the concept and understand the potential power, but my first data entry attempt included negative y values; which I am told is a non- numerical character in an error message! (UPDATE: I found a way to fixed this with a less intuitive data entry method)
Perhaps my biggest problem after playing with some spectrophotometry curves and enzyme velocity curves is that once I enter a set of data, plot it, then fit the appropriate curve, then try to use it as a standard curve; any data that is beyond the original data is off the graph and out of sight--the app has no automatic re-scaling function that I can find. My data frequently requires extrapolation and without a large enough area on the plot, I am limited to interpolation.
I wanted to use this with my students, and at my bench. Without extrapolation (& auto re-scaling)...no dice.
I wanted to contact the developer, but the developer website kept forcing me to the "manual" and provided no contact info.Show lessAngelwood
Amazing da app!
Hands down the best app in app store! Very easy to use and very well designed yet it's so useful!!!
The author must be a genius and kindest person to offer such a wonderful app for free! Strongly suggest to at least add a "gratitude" button to let grateful users show their tokens of appreciation!
It's very useful for physics, finance and economic students!Show lessI'm #4
Реально помогает мне в работе!
Я инженер , а не математик!
Это приложение решило для меня многие практические проблемы!Alexlexandr
Lots of potential
This is an important app to have on the iPad.
One thing I noticed that seems silly is that the app can export to Dropbox but it cannot import a text file from Dropbox. That seems easy enough to fix.
This app should try to become more like Kaleidagraph or pro Fit in the Mac....T.E.Moore
Very Nice App
Really quite good, and drops into Dropbox!jumboben
very good app
Great application- but I am having problems with putting larger amount of data. For about 500 x and y it works fine, but when I get 1000 x and y -it crashes.
Anyway- still great app, and it's for free!ThimGrim
nice package!
this is an excellent light-weight plotting and fitting package. It could use a few more features, which I don't think would be hard to implement. Even without these, it is highly useful.
Suggestions:
error bars
multicolumn data, where one can select the column for x,y and an error bar, and then plot multiple sets from the same file by selecting different columns sets.
weighted fitting: allow error bars to select weights, along with option for constant fraction error, poisson errors (sort of data value) and two common hybrid weights,
sigma^2=y+a*y^2 (poisson error with constant fraction noise for high counts)
and
sigma^2=b^2+a*y^2 (fixed noise floor plus constant fraction error)
of course, if one is allowed to load error bars in the first place, the user could just fill these values in, but automating a few common cases is very convenient.
Thanks for the work on this!Show lessMarcus Mendenhall
Great Analysis Tool
I was looking for a curve fitting program and found this app. It does everything I expected and more. Many thanks!HansoResearch
Excellent...
Excellent app....I'd suggest that you charge *something* for a couple of reasons: 1) you deserve it for such a polished product and 2) if it's not a free app then you won't have dullards downloading it and rating it low just because they don't understand it.da1prophet
Awesome
Your new program is awesome. I work with many science teachers and student teachers each year. As the iPad is used more in schools, I think your program extends what students can do using their iPad in science class. Offering a free version increases the chance that students and teachers can access the program. Thanks!Show lessScienceEdProf
