---
title: MrSID LiDAR SDK Release Notes
---

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## MrSID LiDAR SDK Release Notes

[System Requirements are here.](https://www.extensis.com/support/developers/mrsid-lidar-sdk/system-requirements/?hsLang=en)

**Current version:** 1.1.4 (released January 2017)

### Version 1.1.4

(released January 2017)

- On Windows, the library is bulit without `/Zc:wchar_t-` so `wchar_t` is now a compile defined type, which is the VS default behavior. The `/Zc:wchar_t-` option is not required to link with wide string methods in FileIO and Version.
- SDK class no longer override the new and delete operators. This alows users of the SDK to override new.
- Added support for new LAS 1.4 channels ScannerChannel, ClassFlags, and NearInfrared.
- Added `ProgressDelegate::displayWarning()`, which is an optional override, it is called with informitive messages.
- Added `PointInfo::init()` methods for building PointInfo object that have a subset of channels of a given PointInfo or PointData object.

### Version 1.1.3

(released December 2015)

- Changed IO and FileIO classes. Subclasses of IO are now responsible for making `IO::open()` and `IO::close()` thread safe. This will only affect derived sub-classes of IO. See the file `lidar/IO.h` for more information.
- Added a new GPS time channel. Replaced the `CHANNEL_NAME_GPSTime` macro with `CHANNEL_NAME_GPSTime_Week` and added `CHANNEL_NAME_GPSTime_Adjusted`. `GPSTIme_Week` is the number of seconds since midnight Sunday. `GPSTime_Adjusted` is the satellite GPS Time minus 1×109.

### Version 1.1.1

(released December 2010)

- Turned the SDK library into a DLL and removed the static version.
- Turned `Bounds::Huge` into a function `Bounds::Huge()`.

### Version 1.1.0

(released March 2010)

- Revised file format (MG4 4.0.0.3) to support lossless floating point compression.
- Added `PointInfo` class to replace the `(ChannelInfo[], length)` idiom.  
  1.0.1: `iter = reader->createIterator(bounds, 1.0, reader->getChannelInfo(), reader->getNumChannels(), NULL);`  
  1.1.0: `iter = reader->createIterator(bounds, 1.0, reader->getPointInfo(), NULL);`
- Removed `LTLogMessage` functions. The information can be retrieved from the Error object.
- Added experimental SWIG-based C#, Python and Ruby bindings to the contributions directory.
- Robustness improvements to viewer application.

### Version 1.0.1

(released September 2009)

- Revised file format (MG4 4.0.0.2) to support faster decodes.

### Version 1.0.0

(released July 2009)

- This is the first public release of the LiDAR SDK.

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