← Back to Tutorials How to Digitize a Plot for MATLAB (CSV Workflow) ⚡ Quick Answer Digitize in Engauge Digitizer, export CSV, load with one line: T = readmatrix(‘curve.csv’) — column 1 is X, column 2 is Y. Important: if you have the original .fig file, don’t digitize at all — extract the data directly…
← Back to Tutorials How to Digitize ECG Traces (QT & HRV from Published Strips) ⚡ Quick Answer Yes. An ECG strip is a time-series XY plot: in Engauge Digitizer, set X to time and Y to voltage using the standard ECG grid (25 mm/s → 1 small square = 40 ms; 10 mm/mV →…
← Back to Tutorials How to Digitize Spectra from Papers (Raman, IR, XANES) ⚡ Quick Answer Yes. A spectrum is an XY curve: set X to wavenumber/wavelength/energy and Y to intensity/absorbance in Engauge Digitizer, trace the spectrum, and export CSV. Two gotchas: IR wavenumber axes usually run reversed (4000→400 cm⁻¹ left to right — place…
← Back to Tutorials How to Extract Data from a PDF Graph (Vector & Scanned) ⚡ Quick Answer Two paths: (1) Screenshot the figure at 300–400% PDF zoom and digitize the screenshot in Engauge Digitizer — precision scales with pixels and this works for every PDF. (2) If the PDF has true vector graphics, open…
← Back to Tutorials How to Extract Data from a Box Plot Image (Five-Number Summary) ⚡ Quick Answer Manually, in about two minutes per plot. Set the Y axis in Engauge Digitizer, then use the point tool to click the whisker ends (min/max), box edges (Q1/Q3), the median line, and any outlier dots. You recover…
← Back to Tutorials How to Digitize Well Logs (Gamma Ray, Resistivity, Sonic) ⚡ Quick Answer Yes. Import the scanned log into Engauge Digitizer, set the depth axis (depth increases downward — place axis points accordingly), set each track’s value axis (logarithmic for resistivity), and trace each curve per track. For very long logs, work…
← Back to Tutorials How to Digitize Datasheet Curves (Electronics Engineers) ⚡ Quick Answer To digitize a datasheet curve: screenshot the graph at 200–400% PDF zoom for maximum pixels, import into Engauge Digitizer, set the axes (logarithmic for frequency — place axis points on labeled decades), trace with Segment Fill or manually, and export CSV…
← Back to Tutorials How to Batch-Digitize Multiple Graphs (Fast Workflow) ⚡ Quick Answer Engauge Digitizer has no batch mode — it is an interactive tool, one figure at a time. For many figures you have two real options: (1) a standardized manual assembly line (identical setup, axes first, trace second, export third), or (2)…
← Back to Tutorials Is Digitized Data from Graphs Accurate Enough to Publish? ⚡ Quick Answer Yes — with caveats. Published validation studies report intraclass correlation above 0.95 and typical errors around 1% between digitized and original data, when the source image is high-resolution and axes are set carefully. Systematic reviews in major journals routinely…
← Back to Tutorials How to Digitize Bar Charts with Error Bars (Mean ± SD/SE) ⚡ Quick Answer Engauge Digitizer is built for XY curves, but you can recover bar-chart values: set the Y axis on the value scale, then use the point tool to read each bar top (the mean) and each whisker end…
