ChangeLog

(Please ignore our internal bug tracking links on this page. Information on how to submit bug reports is here).

pending known bugs

Released: 2019-?

  • [feature]

    Add offset-arrayed spins.

    References: #188

  • [bug]

    Not all Android devices can draw droplets, especially MALI-based GPUs have problems. Need to collect more info about why.

    References: #441

  • [bug]

    The optimizer tries to optimize during pulse sequence acquisition elements, which is silly. Need a better way to tell it what periods and what controls to optimize.

    Also, the cost function doesn’t take time or pulse amplitude into account, which it should/will.

2.1.0-beta18

Released: 2019-10-?

  • [bug]

    Fixed another. speed. problem.

2.1.0-beta17

Released: 2019-03-?

  • [bug]

    Fixed speed problem with very long sequences and very large pulses

  • [bug]

    Fixed problem where time slider could get out of sequence with actual displayed experimental state.

    References: #471

2.1.0-beta16

Released: 2019-03-?

  • [bug]

    Fixed acquisition phase editing for ‘table’ sequences - was interpreting degrees as radians.

  • [bug]

    Fixed overly-persistent sequence/simulation error message - can now click it away.

2.1.0-beta15

Released: 2019-03-18

  • [feature]

    Added built-in window function (with nice fat FT) to table editor: exp(-t*10)

  • [feature]

    Added option to disable autoscaling on VectorWidgets (particularly FID and SPECRTUM displays) - right-click the widget to get a menu with an en/dis-able item.

    Also added ability to manually scale the widget - hold down control and roll the mouse wheel while pointing at the display.

  • [bug]

    Fixed several bugs with sequence table’s and acquisitions. Added acquisition operators to the “Current Hamiltonian” display.

    References: #476, #477

2.1.0-beta14

Released: 2019-03-13

  • [bug]

    Can now set ‘np’ in the Sequence Explorer for JSON/Table sequences with acquisition.

  • [bug]

    Again, much faster large-step optimization (gradient) calculation, and all around calculation of time advance.

2.1.0-beta13

Released: 2019-03-10

  • [bug]

    Dont crash when acquisition sweep width (sw) is negative. Fall-back to Pade approximation when \(\|H\|\) is large.

  • [bug]

    Double speed of acquisition by measuring \(<Im>\) instead of \((<Ix> - i \cdot <Iy>)\)

2.1.0-beta12

Released: 2019-03-07

  • [bug]

    Only show real part of spectrum (for now). Can be modified by adjusting window function.

2.1.0-beta11

Released: 2019-03-05

  • [bug]

    Mouse wheel now changes pulse angle in Table Editor when pointed at the numeric angle display.

2.1.0-beta10

Released: 2019-03-04

  • [bug]

    Added window function to acquisition, set in Table Editor using the ‘Shape’ button, or in Industrial Sequences by declaring, ie define any window = 'cos(t*pi).+1'.

2.1.0-beta8

Released: 2019-02-26

  • [bug]

    Fixed shaped pulse amplitude calculation in Industrial sequence language.

2.1.0-beta7

Released: 2019-02-24

  • [bug]

    FID Acquisition and 1D Spectrum display.

    References: #424

  • [bug]

    Basic Pulse optimization - simple gradient descent.

    References: #429

  • [bug]

    Limit Varian pulses to 100000 lines/points.

    References: #457

  • [bug]

    Fixed a weird issue when editing a sequence in the Sequence Explorer that would cause repeated warnings related to automatic sync’ing with the main simulation.

    References: #422

  • [bug]

    Fix crash when taking log() of certain matrices for which no log() exists.

    References: #430

  • [bug]

    Clean up the graphics of the textual Initial State Menu editor, and make DROPS 3d view sync optional.

    References: #437

  • [bug]

    Keep subsequent delay elements separate rather than combining them into one.

    References: #450

  • [bug]

    Better messages when sequence doesn’t match spin system.

  • [bug]

    Update browser version to use WASM instead of asm.js for much faster load times.

  • [bug]

    Added a full-screen presentation mode to the desktop and browser apps, toggled by ctrl-shift-F (capital F!)

    References: #455

  • [bug]

    Remember the last mode an operator window was using.

    References: #452

  • [bug]

    Added preference selection for “DropType” to select droplet renderer - might help with #441.

    References: #441

  • [bug]

    Add SDL2 dependency to generated .rpm, remove Ieval from rpm.

    References: #444

  • [bug]

    Accept expressions tau as τ, and pi as \(\pi\).

  • [bug]

    Remember operator view mode per-window.

    References: #452

  • [bug]

    Show the currently active initial state operator as highlighted in the menu.

    References: #426

2.0.4

Released: 2018-08-20

  • [bug]

    Fix some crashes on obscure bad pulse sequence entry.

  • [bug]

    Add option ‘–noaudio’ to disable audio on desktop.

    References: #413

  • [bug]

    When the option ‘Show Id Droplet’ was enabled, AND ‘Magnetization Vectors’ was disabled, the I1 droplet would move to the Id droplet position.

    References: #414

2.0.3

Released: 2018-06-20

  • [feature]

    Removed which-operator selection from Operator Windows popup menu.

  • [bug]

    Fix font sizing bug in the Operator Windows.

    References: #396

  • [bug]

    Close the Table Sequence Editor when a non-table sequence is loaded.

    References: #405

2.0.2

Released: 2018-06-12

  • [bug]

    Fix what happens when un-checking the ‘Auto apply’ box in Sequence Explorer.

    References: #389

  • [bug]

    Droplet labels went briefly missing in 2.0.1.

    References: #394

  • [bug]

    Fix broken Export Workspace on the MacOS AppStore version due to sandboxing.

    References: #386

2.0.1

Released: 2018-06-08

  • [bug]

    Sometimes on iOS or Retina display the font loses symbol characters.

    References: #352

  • [bug]

    Resimulate when control hamiltonians contain changed J or nu params.

    References: #381

  • [bug]

    Fix character glyph rendering bug that caused wrong symbol or no symbol to be displayed.

    References: #348

  • [bug]

    (see 348)

    References: #349

  • [bug]

    (see 348)

    References: #376

  • [bug]

    Sometimes bloch vector objects were displaying uninitialized random values.

    References: #383

  • [bug]

    Only allow the main view to show the density operator.

    References: #327

  • [bug]

    Resize operator view windows always to be square.

    References: #352

  • [bug]

    Show 270° instead of -90° for RX phase display.

    References: #373

2.0.0

Released: 2018-04-27

  • [bug]

    A number of bug fixes.

2.0.0-beta25

Released: 2018-04-27

  • [bug]

    Retina display shows wrong % in Zoom menu.

    References: #329

  • [bug]

    Fix bug where J13 and J23 bars were swapped.

  • [bug]

    Fix some menu entries for web and narrow screens.

2.0.0-beta24

Released: 2018-04-06

  • [feature]

    Added some standard shaped pulses (sinc,gauss,hyperbolic secant).

    References: #332

  • [feature]

    Web version now double-checks with user before closing window.

  • [bug]

    Fixed menus on narrow screens.

2.0.0-beta23

Released: 2018-04-04

  • [feature]

    Project save/load/import/export feature (File menu).

    References: #321

  • [feature]

    Added text descriptions of pulse sequences.

    References: #322

  • [feature]

    Rename command line option RESET to –reset

  • [feature]

    Rename Option menu to View

  • [feature]

    Highlight active options in menus.

  • [feature]

    Lots of updates to documentation.

  • [bug]

    Show GUI zoom as percentage.

    References: #300

2.0.0-beta22

Released: 2017-12-22

  • [bug]

    Many small bug fixes

  • [bug]

    Fix SDL on older Android APIs.

    References: #318

  • [bug]

    Fix scaling on macOS retina displays.

    References: #296

  • [bug]

    Fix identity operator, was E, should have been 1/2E.

    References: #293

  • [bug]

    Fix ‘C’ button in operator editor to clear to 0.

    References: #259

2.0.0-beta20

Released: 2017-11-30

  • [feature]

    All operators can now be shown in DROPS or matrix form by right- or long- clicking on the display area.

  • [feature]

    Make the back-button on Android send SpinDrops to the background.

  • [bug]

    Fixed a problem with resolution on Mac retina displays.

  • [bug]

    Correct DPI detection of iOS devices.

  • [bug]

    Examples of how to do propagator calculations for Qbits under the Pulse Sequences > Tutorials menu.

  • [bug]

    macOS Multi-finger gestures sometimes behave strangely.

    References: #176

2.0.0-beta19

Released: 2017-11-17

  • [bug]

    Android release only, fix minor bug in beta18.

2.0.0-beta18

Released: 2017-11-17

  • [feature]

    Added ‘propagator’ channel type to ppg, and some basic examples of qbit gates under Pulse Sequence > Tutorials. And a Q. Computing basis set in the List Prod Ops window.

    References: #257

  • [feature]

    Added Effective Hamiltonian view window, shortcut: ‘E’.

  • [feature]

    The advanced sequence editor is unusable on small screens. Dont show the option when the screen is too narrow.

    References: #168

  • [feature]

    Added quantum-computing style bra-ket notation, ie <001| <1|0> <0||0> |1><0|

  • [feature]

    easier to remember keyboard shortcuts, D:ensity Operator window, H:amiltonian window, U:Propagator window

  • [bug]

    Crash in recognizing cerain ppg loops fixed.

  • [bug]

    Sometimes the first frame drawn after start and after resize isnt correct.

    References: #174

  • [bug]

    Fixed Android multi-finger gestures: rotation, zoom.

  • [bug]

    Clarified new sequence creation when cloning a sequence.

  • [bug]

    Android devices / versions dont all recognize double-click to reset the view. One needed to click exactly on the same pixel twice, hopefully fixed now.

    References: #172

  • [bug]

    fixed: macOS multi-finger gestures with 16 frames (phase cycling) is extremely slow.

    References: #202

  • [bug]

    Fixed typo in Preferences grouping, user may need to ‘reset’ preferences to clean up the preferences editor display.

2.0.0-beta17

Released: 2017-10-18

  • [feature]

    Change Propagator window to show cumulative propagator from beginning of experiment.

  • [feature]

    Group Preferences into categories.

2.0.0-beta16

Released: 2017-10-17

  • [feature]

    Added a propagator window in Options menu.

  • [bug]

    Fixed crash in sequence table editor.

  • [bug]

    Fixed window size/position saving for some windows.

  • [bug]

    Save the current state on iOS when going into the background.

  • [bug]

    Select either Heteronuclear or Homonuclear system.

2.0.0-beta15

Released: 2017-10-10

  • [feature]

    Save window locations and sizes.

  • [bug]

    Loading invalid sequences caused infinite loop

  • [bug]

    Changing spin count with an invalid initial state for the new count caused crash.

2.0.0-beta14

Released: 2017-10-05

  • [bug]

    Fixed problem with Android release build.

    References: #242

  • [bug]

    Display receiver phase when in multi-frame mode.

  • [bug]

    Fixed problem with heteronuclear channel assignment.

2.0.0-beta13

Released: 2017-10-05

  • [bug]

    Spins were erroneously assigned to rf channel 0, causing erroneous hamiltonians.

  • [bug]

    Coupling bars weren’t updating when changing J values.

  • [bug]

    Changing Layout between Chain and Triangle didn’t take effect immediately.

2.0.0-beta12

Released: 2017-09-21

  • [feature]

    Adding ?RESET to the SpinDrops-web URL resets the Preferences

  • [feature]

    Show circle with frame phase in Phase Cycling mode.

    References: #187

  • [feature]

    added keyboard shortcuts [ ] for jumping to begin/end of sequence

    References: #231

  • [feature]

    keyboard shortcut ‘r’ toggles the repeat mode

    References: #231

  • [feature]

    keyboard shortcut ‘b’ changes to a random sequence (for debugging)

    References: #231

  • [feature]

    show error message when creating a Preference Scheme fails

  • [feature]

    Menus are drawn white on web version, and only visible when moused-over.

  • [bug]

    macOS bundle versions and IDs should be set correctly

  • [bug]

    Resetting preferences failed to change foreground/background colors

    References: #218

  • [bug]

    help menus should now correctly link to the online documentation

  • [bug]

    can no longer create Preference Scheme with blank name “”

  • [support]

    documentation updates, mostly operator notation

    References: #231

2.0.0-beta11

Released: 2017-09-21

  • [feature]

    equal-sized DROPS layout for multi-frame (ie phase-cycling) experiments

  • [feature]

    Added option Apply RX Phase to draw DROPS with receiver phase applied

  • [feature]

    Added dropdown menus to Operator and List Prod Ops windows

    References: #200

2.0.0-beta9

Released: 2017-09-12

  • [feature]

    Save the Spin System parameters between across sessions.

    References: #191

  • [feature]

    Option Strong J-Coupling to enable Strong Coupling terms in Hamiltonian

    References: #195

  • [bug]

    Android sound beep had wrong sampling rate, fixed.

  • [bug]

    Crash when Hamiltonian has invalid custom string-based terms.

    References: #154

1.0.0

Released: 2015-05-28