GEEC User ManualGEEC User Manual
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GEEC app
Home
GEEC app
  • Getting Started

    • Getting Started with GEEC
  • Circuit Design

    • Circuit Basics
  • Analysis & Simulation

    • Analysis Guide
    • Basic Analyses (Detailed)
    • Other Analyses (FFT, Fourier)
  • Advanced Features

    • Interactive Features
    • Results & Export
    • Project Management
  • Reference

    • Keyboard Shortcuts
    • Troubleshooting & FAQ
    • Expression Reference

Results & Export

Viewing Analysis Results

Result and Graph Dialogs

After running an analysis a floating, draggable dialog opens with the results. There are two dialog types:

Dialog typeUsed forContent
Result dialogOP, AC, TF, Tran (result analyses)Accordion table of computed values
Graph dialogDC, AC/TF, Tran, PZ, FFT, Fourier (graph analyses)Interactive chart

Both dialogs can be:

  • Dragged by their title bar to reposition on screen
  • Resized by dragging the dialog edge
  • Closed with the x button; re-opened from the Analyses tab in the right panel

Result Dialog Sections

A result dialog groups output into collapsible accordion sections:

SectionDescription
ResultsPrimary simulator output - node voltages, currents, transfer functions, etc.
SubstitutionsManual algebraic substitutions applied on top of the result.
User resultsCustom expressions computed from the raw results.

Edit Mode - (enabled by default)

Enable Edit Mode from the Results menu in the dialog menu bar. With Edit Mode on, each row in the result table gains action buttons:

  • Star - pin this single result to the Favorites panel in the right menu for quick access
  • Edit - re-open the calculator pre-filled with this result's expression
  • Delete - remove a user result or substitution

Interacting with Graphs

Basic Interactions

ActionBehaviour
PanClick and drag inside the chart area
ZoomScroll wheel inside the chart area
HoverTooltip shows exact value at the cursor position

Graph Dialog Menu

Each graph dialog has a menu bar (top of the dialog) with four menus:

File menu

ItemAction
Set NameRename the graph / analysis
Save to FavoritesPin the graph thumbnail to the Favorites panel
Export PNGDownload the chart as a PNG image
Export SVGDownload the chart as a scalable SVG image
CSVOpen a dialog showing the raw data (semicolon-delimited); copy or download

Analysis menu

ItemAction
Run (F9)Re-run this analysis
SettingsSimulator settings (setting per analysis)

Results menu

ItemAction
Graph settingsOpen the graph appearance editor
View typeFor AC analyses: switch between Magnitude+Phase, Real-Imaginary, Magnitude only, Phase only, etc.

Help menu

ItemAction
LogShow the raw simulator output log
ScriptShow the generated simulation script
Crash dumpDownload a crash dump for bug reporting

Right Panel

The right panel has three tabs for circuit projects:

Favorites tab

Shows pinned results and graphs. Use the toolbar buttons to:

  • Run all (F9) - re-run all analyses that have items in Favorites
  • Add section - organise Favorites into named sections
  • Edit - enter edit mode to rename, reorder, or delete Favorites entries
  • Delete all - clear the entire Favorites list

To add items to Favorites:

  • Graph ? graph's File menu ? Save to Favorites
  • Single result value ? enable Edit Mode in the result dialog ? click the ? star icon on a row

Analyses tab

Alphabetical list of all analyses in the project. Click an entry to show or hide its dialog. A trash icon removes the analysis permanently. When an analysis is opened for the first time it runs automatically if no results exist yet.

Layers tab

Flat list of every item on the canvas (components, wires, text, arrows). Click an item to select it on the canvas; the trash icon removes it.

Export Formats

Circuit Diagram Exports

Raster images (PNG, JPEG, WebP)

Go to Export tab ? Raster image section:

FormatTransparencyBest for
WEBPYesWeb use - smallest file size
PNGYesScreen display, email, web
JPEGNoSituations where smaller files are needed

Clicking a button generates the file immediately and downloads it with the project name.

Tips

PNG is transparent (canvas background not included). For a white background use JPEG, or open the PNG in any image editor and add a white background.

PDF

Export tab / Vector image / PDF

  • Scalable vector format - never pixelates when printed or scaled
  • Best choice for professional reports and publications
  • Downloaded automatically with the project name

LaTeX

Export tab / Vector image / LaTeX

Opens a dialog explaining the workflow and providing download buttons:

  1. Download the PDF (circuit diagram as a PDF file)
  2. Download the TeX source file (.tex and \put commands using the gfig package)
  3. Download gfig.sty from the link in the dialog and place it in the root of your LaTeX project

Include the circuit in your document with the \gfig command:

\usepackage{gfig}
...
\gfig{circuits/my_circuit}

Optional \gfig parameters:

ParameterDescription
widthRequired image width
scaleScale factor (when width not set)
textsizeLaTeX font size command, e.g. \small
addtowidthExtra horizontal padding
addtoheightExtra vertical padding
hshiftHorizontal shift
vshiftVertical shift

Example:

\gfig[scale=1.1, addtowidth=1mm, textsize=\small]{circuits/my_circuit}

Place the downloaded .pdf and .tex files inside a circuits/ subfolder next to gfig.sty.

Tips

SVG export is available for graphs only (graph dialog / File / Export SVG), not for circuit diagrams. Use PDF for a vector-quality circuit diagram.

Netlist Export

Export tab ? NetList section:

ButtonFormatUse
SpiceSPICE netlistPaste into NGSpice, LTspice, or any other SPICE simulator
SymbolicSymbolic netlistInput for the SymCirc backends

Clicking a button opens a dialog showing the generated text with a Copy to clipboard button.

Graph Data Export (CSV)

Inside any graph dialog: File / CSV

A dialog shows the raw data with a copy button. The data is semicolon-delimited:

Frequency, abs(v(out)), ph(v(out))
1.0, -80.0, -179.5
1.26, -79.8, -179.4
...

Graph Image Export

Inside any graph dialog: File / Export PNG or Export SVG

  • PNG - raster image, good for documents and presentations
  • SVG - scalable vector, retains quality at any size

Next: Go to Project Management to save and organise your work.

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Interactive Features
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Project Management