Changelog — LOGADEC

1.0.582026-10-28

Fixed the view list moving to the lower left when the Analysis tab or Investigate layout is opened while views are shown as a list on the left

1.0.572026-10-28

Faster view tab switching and Select all when many series are shown (redundant redraws of the same image are skipped; the display is unchanged)
Slightly faster CSV import (read-ahead and faster creation of downsampling levels)

1.0.562026-10-27

Improved the accuracy of change points and frequency anomalies in Full diagnosis. It now finds the analysis tutorial answers (change points at 42 and 88 seconds, frequency anomaly at 58–72 seconds)
Opening the file with ?demo=tutorial at the end of the address creates the analysis tutorial data at startup (only when Pane A has no data)
Added an icon to the file (shown on the browser tab when opened from the site). Revised the English UI wording, terminology, and capitalization (615 strings) to match standard test and measurement software usage

1.0.542026-10-25

Added notch (with harmonics), band-stop, moving average, and moving median filters, with a response graph (small and expanded views: magnitude, phase, and the spectrum before and after)
The Dark theme now uses the Windows 11 dark colors. In TOPO, the main action buttons use a calmer fill instead of glaring neon, and dim text in TOPO themes is easier to read. The Series emphasis preview is now a miniature of a real chart
Translated the Japanese that remained in the English UI. Pane toolbars show icons only when they do not fit in split view. Fixed the export summary showing a scaled DPI and size for vector SVG

1.0.532026-10-24

Stacked tiers can now show the Y-axis name vertically to the left of the Y axis, as in the overlay view (Axis settings > Y-axis name; exported images match and the setting is saved in the file)
Added [Reorder] to the pane bar to reorder stacked tiers by dragging (in sync with Reorder in the axis settings)
Import dialog: the preview keeps the same size even for files with only a few rows. Fixed the reorder handle tooltip showing Japanese in the English UI

1.0.522026-10-24

Folder import now reads several CSV files at the same time, both when joining them and when importing them as separate sources. Reading CSV files is also faster, and joined data stays responsive with all series shown.
Folder import list: checking a file no longer jumps to the top, Shift selects a range, failure reasons are shown in the row, and reopening the settings keeps your choices. Fixed [Open settings] doing nothing while a file name was being typed.
Added [Apply to all tabs] to bulk series style. Checked the whole app with long source and series names and fixed what broke: source rows, legend labels, readouts, the right-click menu, the folder import list, and more.

1.0.512026-10-22

When you reach the display limit or the maximum number of legend labels, the message tells you how to raise it, and Change limit opens that setting. Legend label settings start collapsed, and leader-line roots can be dragged in any anchor mode.
Checked the layout of every screen and fixed clipped or overflowing text on the English screen, overlapping tick labels on narrow graphs, wrapped axis names, and controls that did not match the theme.
Fixed Ctrl+Z not undoing a bulk X zero alignment by threshold, and source rows overflowing to the right when a zero point was set.

1.0.502026-10-22

Fixed reopened .lgd files that contain analysis series or demo data creating a phantom source "Data 1" and renaming series.
Fixed hidden sources, the source order and the position of formula series not being restored when loading settings onto the same data.
Fixed formula and other added series staying hidden when an item preset containing them was applied, and units and source names appearing twice in the names of series registered from data export.

1.0.492026-10-22

Fixed the ``name button in formulas, XY transforms (the type was lost when turned off and on; the preview of the partner series), and the buttons of the bulk apply dialog.
Fixed the unit missing from the frequency anomaly heading, power/PSD units shown as "m/s²²", display names in the cursor value list, and missing-point notes not shown on the investigate screen.
Japanese text remaining on the English screen (formula errors, the FFT note, names of series registered from data export, and more) is now in English.

1.0.482026-10-22

Fixed analysis results not appearing for Pane B in Split view, and the Add to series button of moving statistics not being available.
Fixed Ctrl+Z also undoing zoom when undoing a setting, and analysis ranges typed start-then-end turning into a different range.
Reset all now returns to the ranges used right after loading. The data export, item selection and import dialogs close with Esc, and deleting a source also removes analysis series made from it.

1.0.472026-10-22

SVG image export can now be copied to the clipboard (a PNG of the same picture is included).
Save dialogs now open in the folder where you last saved that kind of file (images, data files, data export, and so on).
Image export now asks where to save after the picture is ready and reads the written file back to check it. Fixed confirmation messages from the image export dialog appearing behind it.

1.0.462026-10-21

Switching view tabs is faster with many series and large data: unchanged parts are no longer rebuilt, and an extra redraw was removed.
Data export (CSV, TSV, Excel) now asks where to save after the file contents are ready, and reads the written file back to check it.
The view list on the left can now be resized by dragging its right edge (double-click to restore the original width).

1.0.452026-10-21

Fixed: if saving stopped partway after choosing an existing file to overwrite, a 0-byte file could remain and the original data was lost. The save location is now chosen after the file contents are ready.
Saved files are now read back and checked; if a file was not written correctly, you are notified and it is also saved as a download.
Opening an empty or truncated .lgd file now explains the reason instead of showing "invalid zip data".

1.0.442026-10-21

More operations can be undone with Ctrl+Z: numeric fields next to sliders, the X zero point and FFT settings in the Axes, Display and Analysis tabs, the series Reset button, and reordering panels in the stacked view.
The undo history now keeps up to 50 steps instead of 20 (fewer when there are many series, to stay within the memory limit).
Deleting a preset card now asks for confirmation, because presets are not covered by undo.

1.0.432026-10-21

Fixed: in XY analysis, the equation and R² on the fit card stayed outdated after changing ranges or undoing with Ctrl+Z. The card now shows the equation of the drawn curve immediately, including right after clicking + Add, without pressing Refresh.
Fits that are not calculated automatically (LOESS, custom formula, etc.) now show a notice when the points or ranges change, asking you to recalculate.

1.0.422026-10-21

More operations can be undone with Ctrl+Z: Select all / Clear all for series, showing and hiding sources, legend labels (adding, dragging, per-label settings and the legend card), and creating, editing, showing/hiding, duplicating and deleting formulas.
Fixed: undo had no effect for the line-width and marker-size sliders in the right-click menu, for clearing all analysis results, and for deleting a formula series.
Undo now skips steps that would change nothing (for example, just entering a field), so pressing Ctrl+Z always has a visible effect. Loading a settings file is now also an undo boundary.

1.0.412026-10-21

Fixed: pressing Ctrl+Z after loading data could remove the loaded data. Loading, opening a .lgd file and generating demo data are now undo boundaries; the series list no longer keeps old rows when undo empties a pane.
Adding a series from an analysis (rolling statistics, outlier score, etc.) can now be undone with Ctrl+Z; previously it was removed together with the preceding, unrelated step.
Fixed: in image export (SVG and PNG), the text in legend balloons was shifted to the left of the box.

1.0.402026-10-20

Views can be shown as a vertical list on the left instead of tabs, with the number of displayed series, search and a collapsed mode.
In the two-pane layout the list sits to the left of both panes; the display style and collapsed state are remembered.

1.0.392026-10-20

View tabs show separators and more legible labels for unselected tabs (separators 3:1 and text 4.5:1 or better in every theme).
With many tabs: scroll buttons, wheel scrolling, a ▾ list of all tabs with search, and Alt+PageUp/PageDown for the previous/next tab.
The clicked tab is highlighted before the view is restored, and a hidden Sources tab no longer forces extra layout work on each switch.

1.0.382026-10-20

Wavelet intensity is normalized to the squared amplitude, so components at different frequencies can be compared and the ridge follows the strongest one.
Low-frequency wavelet kernels are no longer truncated at 256 points; long kernels use FFT convolution, removing the frequency and intensity errors.

1.0.372026-10-20

Clearing all analysis results now includes the known-event investigation and its count; changing the target also clears the overall diagnosis summary and counts.
Correlation confidence intervals use the same Bonferroni correction as the p-value, and the overall diagnosis no longer overwrites the change-point and related-event card fields.
Formula integ shows how many gaps it did not bridge. R² of exponential and power fits uses only the fitted points, with the number of excluded points shown.

1.0.362026-10-20

Changing only the density now updates the size and DPI shown in the export dialog.
Vector SVG is written without the density factor and carries its physical size in mm or inches; print presets such as “A4 landscape 300 dpi” switch to mm and 300 DPI.
Raw-value data export no longer labels columns with the converted unit.

1.0.352026-10-20

Opening an .lgd with more than 1,000 series in the free version now shows a notice. The folder-import estimate includes series already loaded.
TDMS files read the first row as channel names and the second as units; without a time channel, X is generated from the waveform increment.
Loading a CSV of 20,000 rows or more for the first time no longer adds “ (2)” to the source name.

1.0.342026-10-20

Semicolon-delimited CSV files with decimal commas are read automatically, and columns that cannot be read as numbers are reported. The X-axis unit is taken from the file's unit row.
Saved formulas are calculated for the first file loaded after startup. Display names now belong to the open document and no longer overwrite the shared list.
Loaded numbers no longer gain extra digits (0.2042 no longer becomes 0.20420000000000002).

1.0.332026-10-17

Saving now writes a consistent snapshot of the state at the moment saving starts, and Redo is blocked while saving (settings and data can no longer disagree).
Dataset loading verifies everything before applying: missing columns or a damaged X leave your current data untouched and the reason is shown; an unexpected failure rolls back, and an older load no longer overwrites a newer one.
Reworded the save dialogs, progress and result messages, listed the full-precision options first, and distinguished saving to a file from starting a download.

1.0.322026-10-17

Measurement area, formula integ and interpolation no longer bridge missing values or time gaps over 1.5× the step (the count is shown). Analysis checks the whole series for backward X before applying the range.
Supports Excel workbooks using the 1904 date system and TDMS waveform start times. Date-time text keeps µs/ns steps exactly, and X values too large for their step are flagged.
The filter details now explain zero-phase attenuation, how band-pass is built, and warn about short segments.

1.0.312026-10-17

Formula import now updates name references to definitions added under a new name; renaming a formula updates formulas that reference it; moving a formula to another pane removes its result from the original pane.
Same-name columns in one source are flagged; preview reference lines match the computed values; unused symbol assignments no longer block deletion; import name clashes ignore case.
mean, std, sum, median, movavg, integ and diff are computed so that extreme values no longer overflow in intermediate steps.

1.0.302026-10-17

Data export and Register as series now output the plotted values (after pre-processing, conversion and filtering) in display-value mode.
Filters: fixed the cutoff dropping across time gaps, constant signals vanishing at very low cutoffs, unit-dependent limits (µs etc.) and cutoff rounding in the input field.
Changing the filter of an added series now rebuilds dependent converted series and refreshes the notes; the XY moving average uses exactly the chosen number of points.

1.0.292026-10-17

Date-times are counted as wall-clock time independent of the device time zone, fixing a one-hour error on daylight-saving days and the acceptance of non-existent dates.
Date-times with a trailing offset (Z, +09:00, etc.) are now read; CSV rows were dropped and pasted values became the year only.
Relink settings now keep the X unit and the hour/minute/second columns; the unit spellings μs and ns are converted as time.

1.0.282026-10-17

The known-event spectrum now shows true Hz, converted to seconds as in the FFT (it was 1/1000 for data in ms).
The Welch segment length and the automatic lower wavelet frequency are now computed in seconds, independent of the frequency display unit and the X unit.

1.0.272026-10-17

Data export no longer leaves the X column blank for X generated from a sampling interval or shifted by a per-source zero.
Known-event CSV now aligns series with different sampling by time rather than by row, and writes dt/lag in seconds (or labels them in X units).
The X zero field, the XY-linked cursor time label and the X unit chosen when pasting now follow the display and selected units.

1.0.262026-10-17

The License Agreement (EULA) is now v1.1.1: the Trial period is 14 days (no other changes).

1.0.252026-10-15

In the XY analysis panel, number fields are wider so values are no longer cut off or double-framed, curve-fit fields are aligned, and the [+ Add dataset] button stands out.

1.0.242026-10-15

Bulk series style now works per source: apply it to chosen sources, give each source its own color or line style, or open it from each row of the Sources tab.

1.0.232026-10-15

Added a button for stacked and FFT views that switches the mouse wheel between zooming the X axis and scrolling the stacked panels up and down (in scroll mode, Ctrl+wheel still zooms X and Shift+wheel zooms Y).

1.0.222026-10-15

When the formulas or presets of an open document have unsaved changes, closing the tab or opening another document now asks for confirmation, and the formula window marks the document as unsaved.

1.0.212026-10-14

Import all CSV, Excel and TDMS files in a folder at once, either one source per file or joined into a single time series in time order; overlaps and gaps are shown so you can choose how to handle them.
X columns with dates and times, time only, or hours/minutes/seconds in separate columns are now supported (including Excel date formats); curve fits can use a fixed intercept; set colors, line styles and markers of many series at once, with revert.
Export and import formulas, with formulas kept per document; the formula preview now zooms, pans and shows values; the bottom stacked panel height and the cross-dataset fit color were fixed.

1.0.202026-10-14

XY Analysis graphs can now be saved as images (PNG, JPG, WEBP, SVG) and the shown points as CSV (also from the right-click menu).
SVG export now writes vector graphics with editable lines and text (time-series, stacked, FFT and XY); the previous embedded-image SVG can still be chosen.
All XY Analysis operations on pairs, ranges, fits and transforms can now be undone with Ctrl+Z.

1.0.192026-10-14

Added graph editing to XY Analysis: drag the plot frame, move the legend or place it outside, change color, marker, size and line by right-clicking points or the legend, double-click axis titles to edit, and undo XY operations.
XY Analysis: coloring points by range can now be chosen at the top of the Ranges tab and from the right-click menu, and points outside ranges can be shown in gray (also fixed range values and fit equations being too small and cut off).
Improved the full-screen formula view, added grouping options for Y-axis series names (same name / same unit), and fixed "Detailed settings in sidebar" not working while another sidebar tab is open.

1.0.182026-10-13

Fixed XY Analysis freezing for a long time when opened with a large .lgd file (redrawing is also lighter).
Fixed time-series times and XY points not matching when pairs come from different sources.
Fixed the .lgd loading progress bar not appearing; it now shows reading, unpacking and restoring progress with elapsed time (large files also load faster).

1.0.172026-10-12

Includes 1.0.16.

Fixed results from earlier conditions sometimes being shown when settings, range or target changed while an analysis was running (including runs in several windows).
Fixed analysis tutorial settings not being applied at run time, and false detections in frequency anomaly (peak frequency), known-event investigation and event analysis.
Fixed issues in XY pre-processing, pair deletion and fit updates, the message shown when a license key cannot be saved, and the trial expiry check.

1.0.152026-10-12

The legend now shows line samples (color, line style, markers), can be dragged to move or resize, and can be placed outside the plot (right or below).
The legend is now included in exported images.

1.0.142026-10-12

Includes 1.0.12 and 1.0.13.

Fixed image export issues (hidden channels appearing, files being overwritten, DPI and size labels, and more).
Reviewed the calculations in filters, spectra, correlation and other analyses (missing data, time units, filter cutoff frequencies and more).
Fixed cases where formula references or previews could differ from the saved result.

1.0.112026-10-11

Includes 1.0.8 to 1.0.10.

Saved formulas can now be called by name inside an expression. The formula window is larger.
Fixed issues in formulas, import (Excel, TDMS, time units) and FFT.
Updated the library used to read Excel files (SheetJS).

1.0.72026-10-08

In stacked view, channels with the same name from several sources can be overlaid in one row.

1.0.62026-10-06

Includes 1.0.5.

Presets can now be imported from and exported to CSV/Excel files.
Small improvements to usability and display.

1.0.42026-10-06

Includes 1.0.3.

Added Expand per source to formulas; channels can be specified by name alone.
Faster screen switching with many channels.

1.0.22026-10-04

Range presets can be organized into named sets.
The frame style of legend labels (callouts) can be chosen.

1.0.12026-10-03

Improved loading and screen switching for data with many channels or columns.
Files can now be loaded by drag and drop.

1.0.02026-10-01

Released the free version.