The style of access that LAS provides for gridded data is also applicable to large collections of in-situ measurements. Users of measured data often want to view a collection as a whole - a 4-dimensional region in which, although the variables not gridded, they can be subsetted and visualized along lines and planes in much the style of gridded data. A common example arises in collections of ocean profiles where the user may wish to visualize (say) a latitude-longitude plot of temperature at a fixed depth despite the non-uniformity of the data collection techniques.
Recent development work on LAS has focussed on this approach to data management. In this presentation we will demonstrate LAS systems for in-situ collections and discuss the challenges of data fusion for mixed gridded and in-situ data sets. The authors believe that this style of access to in-situ collections will be instrumental in promoting greater use of in-situ measurements in model validation.