Free Infrared File Viewer

Report Generation

Data Handling

• Built-in file browser with data preview
• Built-in file finder
• Full automatic audit trail support keeps track of and documents all changes to data
• The audit trail is automatically saved with the data
• Save and restore complete work sessions
• Workspaces (the data windows and all the data contained in them) can be saved to disk for later recall
• Spectral Search and user libraries
• Library Search: a library in EFTIR is simply a directory containing datafiles
• Search is performed in the background, allowing the user to continue with other tasks
• View and edit file header information
• Edit datapoints directly in a built-in spreadsheet and instantly preview the result
• Spectral data can be exported directly into Excel spreadsheets
• Spectral data can be exported to .csv (comma-separated value ASCII) files
• Infinite-level undo of all data changes

Spectral Manipulations

• Zap Spectral Regions
• Zap spectral regions, with zeros or interpolated lines, with the capability of adding noise back into the zapped regions
• Manual Baseline Correction
• Automatic Baseline Correction
• Manual Spectral Subtraction
• X-Axis Shift and Stretch
• Take derivatives of spectral data
• FFT, ratio, absorbance, transmittance conversions
• FFT: Fast Fourier Transform of interferograms, with control over zero-filling, apodization and phase correction
• Convert data between Absorbance, Transmittance, and Diffuse Reflectance formats
• 5 to 99 point smoothing, with Savitsky-Golay, moving average, Hannig and Hamming window methods
• Interpolate / Decimate to change the resolution of the spectral data
• Manual Interactive Spectral Subtraction
• Automatic Spectral Subtraction optimized over a user-selected region
• Offset data by constant
• Scale data by constant
• Truncate to change the spectral data limits
• Kramers-Kroning transform using the Maclaurin method
• Raman Shift correction: with user supplied excitation frequency
• ATR Correction: Attenuated Total Reflectance correction with user control over angle of incidence and refractive indices
• Normalizations: Normalize the data to a minimum, a range, or using Vector Normalization
• Match spectra: set a group of spectra to have the same starting and ending values and number of data points

Synthesize Data

• Average / Add / Add with weights lists of individual datafiles to create new data
• Interactively add peaks to data by stretching data points
• Edit data: edit datapoints directly in a spreadsheet and instantly preview the result
• Create synthetic spectra from user-supplied peak tables with optional noise, baseline offset and baseline slope
• Generate Blackbody spectra with Radiance or Photon distribution for a given temperature
• Change header fields for corrupted or incorrectly converted files

Data Analysis

• Compute integrated areas of spectral regions
• Peak Picking automatically tabulates the peaks in a spectrum
• Peak Measurement: computes peak height using user-supplied peak endpoints
• Signal-to-Noise: computes signal-to-noise ratio over user-defined limits
• User Library Search: search unknown spectra against libraries of data.
• User Library Search: can search against Spectral ID libraries too.

Scripting, Programming and Automation

• EFTIR embeds the open-source Python programming language, which is widely used in scientific program. Python includes modules for advanced numeric programming and data processing. EFTIR can accomodate custom data processing by its ability to execute scripts written in Python.
• Powerful built-in batch processing. Users can create sequences of processing steps without having to write any programming code. A sequence editor makes it easy to automate repetitive tasks.
• Remote control for integration in multi-instrument applications. EFTIR has a built-in network socket interface that is used to accept commands from remote programs. The remote program can be running on the same computer or any computer on the network.

Supported File Formats

Supported Instruments