## Temperature as Secondary X Axis in Arrhenius Plot

Arrhenius plots are often used to determine the activation energy (Ea) and A factor (A) by a linear fit of the logarithm of Arrhenius’ equation. The Arrhenius equation can be given in the form: k = Ae-Ea/RT Where k=Rate constant, … Continued

## Graphing an Island as a 3D Surface Plot

This example shows how to graph an island as a 3D surface plot, and to use special contour line to indicate a particular elevation. Download this OPJ file (2309_GeoSurface_NoAxis.zip, 437KB) to learn how to make this graph. Create a 3D … Continued

## Different scales on same axis with zero gap axis break

When you want to plot two sets of data which have very different value ranges in a same graph, traditionally (and in the most flexible way in terms of arrangement) you could create two layers, as each layer has own … Continued

## Extracting Dates from Text Strings

Worksheet calculations involving date and time data generate a lot of questions to our Tech Support department. Origin can detect some basic date format during import but in many cases data are imported as text instead of date. If data … Continued

## Show Column’s Mean and Size in Column Label Rows

By a few lines of LabTalk Script, you can easily calculate each column’s mean and size in worksheet and put them in column label rows.

## Statistics on Rows

Origin provides tools for user to generate basic statistics for rows in worksheet. In this blog post we will discuss the tools to generate row-wise statistics: Using the “Statistics on Rows” menu Rowstats x-function for non-contiguous data/multiple sheet Pros and cons of … Continued

## How to control the increment list

You can customize the order of the colors of bars, lines or symbols, etc. like in this sample column chart – this rainbow sequence of the bar colors is different from the Origin’s system default order, and has been customized … Continued

## New Orglab Released as Single DLL

A new version of Orglab has been released. Orglab is used for creating custom applications that can read and write Origin project (.OPJ) files. Your custom application communicates with Orglab using COM. Applications can be developed using C#, VB, PHP and … Continued

## Obtaining Y Values From Multiple Curves at a Given X

Not uncommonly, someone will have multiple line plots and would like to read Y values at a given X value. These plots could be contained in a single graph layer or they might be contained in multiple layers as in … Continued