Lab Plot n Fit

4.0
26 reviews
100+
Downloads
Content rating
Everyone
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About this app

Are you a student pursuing a course in science or engineering? Do you have a hard time recording and analyzing all the data in your lab or practical class? Wouldn't it be great if you could make the smart phone in your pocket record, plot and analyze the data for you instead?

'Lab Plot n Fit' does just that and more. The android app can not only help you draw graphs of single and multi-set 2-dimensional numeric as well as time-series X-Y data with ease, but can also help you fit the data to a number of commonly encountered mathematical functions and also to any user defined function as well. You can then analyze the data just as you would do in the lab, without however having to use a graph paper or a computer and even without having to connect to the Internet.

With the 'Lab Plot n Fit' you can do a whole lot of things like:

* Enter your lab data row-wise or alternatively read in your entire data from a text data file (.txt, .dat or .csv) generated from MS Excel or other software programs and stored in your device's memory beforehand.

* Plot graphs of one or more number of data-sets by using a simple interface. Generate grids of different resolutions mimicking a conventional graph paper.

* Change axes ranges, change axes types, stretch or shrink the axes or shift the origin.

* Scale your axes to generate semi-log and even log-log graphs.

* Fit the whole or a portion of the graph for each data set to common mathematical functions and also to any user defined function , also using a simple interface.

* Once the plotting and fitting is done, double tap on any point on the fitted curve to observe and display the corresponding X-Y point. Perform a slope calculation at that point by drawing a tangent and a right-angled triangle, just as you would do using a conventional graph paper. Also obtain Y value(s) at any X value and X value(s) at any Y value from the fitted curve.

* Save both the data as well as high resolution images of your displayed graph, both before and after fitting, to the device's memory.

* Retrieve the saved data at a later time by importing the saved data file into the app and then edit, plot and fit the data again.

* Add info like, your name, instructor's or teaching assistant's name, the name of the experiment the graph pertains to, and so on, to your graph image and data and send them as part of your lab assignment to your teacher or supervisor via email or WhatsApp, from right inside the app itself.

*And text and arrow annotations.

*And more.

Thanking you all,

Authors: A. Poddar and M. Poddar
abhidipt@hotmail.com
Updated on
Nov 15, 2020

Data safety

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4.0
26 reviews
Kabita Barua
August 9, 2020
As always, this is yet another outstanding app for lab analysis work, from your team. Highly accurate and lots of useful features. This app is so accurate that it fits the exact polynomial function , even when only a few data values for (x , y) are given. This accuracy is the same as that with your other apps. Please continue with your project and please keep updating. For such nice and useful apps , many users (including myself) would be most glad to contribute (pay) for every updated version .
3 people found this review helpful
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ABHIJIT PODDAR
November 8, 2020
Glad you found it useful. Please update to the latest version (if you haven't already) to use its newest features.
A Google user
February 10, 2020
This is quite frustrating. All I want is each unit on the Y axis to be a different sequential date, and a normal value on the X. I chose time-series, chose the simple format of "Jan 30" and inputted dates ranging from mid Jan to early Feb in the left with their appropriate value on the right. What came out was all points from Feb and Jan automatically switched in order with Feb plotted along X0 and Jan plotted along X(max) with a diagonal line connecting them to form a big "N". What even?
5 people found this review helpful
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ABHIJIT PODDAR
February 14, 2020
There isn't any "Jan 30" date-time format available! You must have selected the "Jan 01" format. However, '01' represents YEAR (YY) and NOT day of month. Also, you must type Jan 01, Feb 05 etc & NOT Jan 1, Feb 5. For day of month, use: Jan 30 01, 30 Jan 01, Jan 30 2001 etc. Make the changes & your graph would appear just as you would like it to :)
Christos Kazazis
November 29, 2020
This is a great application. Would it be possible to save graphs in pdf format? Other users find it very difficult to retrieve my graphs in png format. 29 Nov 2020 Great news! Thank you indeed!.
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ABHIJIT PODDAR
November 24, 2020
We have included the feature in the latest update :) Earlier reply: We thought png would be most acceptable to the users, but since you asked, we would also try to incorporate the "save graphs in pdf format" feature in the next update. and thanks for your kind words of appreciation.. we would have preferred to have a higher rating too :)

What's new

* No ads.
* Save graph settings along with the data while exporting to a file.
* Re-plot the last drawn graph on app restart.
* Draw box and whiskers plot.
* Automatically identify and remove outliers.
* Get help in marking a data point on the graph grid.
* Save images as pdf files.
* Bug fixes.