How to Visualize a Pixel Line Profile from an Image in SciDAVis A line profile plots the brightness of an image along a straight line: pixel intensity on the y-axis, pixel index along the line on the x-axis. It is the quickest quantitative check in image analysis — measuring the width of a fluorescence band,…
Thesis Figures with SciDAVis: From Plot to Printed Page A thesis stands or falls on its figures — examiners notice blurry axes, mismatched fonts, and inconsistent styles long before they notice your statistics. This guide is a workflow, not a button-by-button manual: how to get a graph out of SciDAVis, into your Word document or…
Fitting the Michaelis–Menten Equation in SciDAVis Enzyme kinetics lives on one curve: reaction rate v versus substrate concentration [S], rising steeply and flattening toward a maximum. The Michaelis–Menten model describes it: v = Vmax · [S] / (Km + [S]) where Vmax is the maximum rate and Km (the Michaelis constant) is the substrate concentration…
How to Plot a Logarithmic Scale Axis in SciDAVis Data that spans orders of magnitude — concentrations from nanomolar to millimolar, frequencies from hertz to megahertz, light intensities in a decay curve — collapses into an unreadable L-shape on a linear axis. The fix is a logarithmic axis, and in SciDAVis it is a two-click…
How to Import Origin OPJ Files into SciDAVis Moving away from Origin? SciDAVis can read legacy Origin project files (.opj) directly — your tables, graphs, and matrices come across into the familiar spreadsheet-and-plot-windows workflow. The import uses the liborigin library built into SciDAVis. This guide walks you through it step by step, including the one…
How to Plot Functions in SciDAVis You don’t need a data table to make a plot in SciDAVis. If you want to visualize a mathematical function — a sine wave, a Gaussian, a parametric curve — you can plot it directly from its formula. This tutorial walks you through creating function plots step by step,…
Descriptive Statistics and Statistical Tests in SciDAVis SciDAVis can summarize any table with one click: mean, standard deviation, variance, min, max and more appear in a new statistics table. What it cannot do is run hypothesis tests — there is no built-in t-test, ANOVA or normality test in SciDAVis 2.9.x. This guide shows you exactly…
How to Add Error Bars in SciDAVis Error bars turn a plain line or scatter plot into an honest picture of your measurement: they show how far each point could plausibly move. In SciDAVis 2.9.x you add them with the Graph → Add Error Bars… command, which opens the Error Bars dialog. This guide walks…
3D Scatter and Surface Plots in SciDAVis: A Complete Guide SciDAVis renders all of its 3D plots with OpenGL (via the Qwt3D library), so you can rotate, zoom and pan a plot with the mouse instead of redrawing it from scratch. This guide covers the two main data paths in SciDAVis 2.9.x: 3D scatter plots…
Multi-Peak Curve Fitting for Spectroscopy Data in SciDAVis Real spectra are rarely a single clean peak. Raman bands overlap, XPS envelopes hide two oxidation states under one hump, and chromatograms merge shoulders into their neighbors. Deconvolving them means fitting a sum of peak functions and reading the positions, widths, and areas of the components. SciDAVis…
