Loading time for geo-tiff maps

Alex Ho

After upgrading from SDK version 1.26 to current version, 1.31, I discovered my MFC application took longer to load than usual.

Time profiling has been conducted and the main cause is isolated to the GM_LoadLayerList() function which may take up to 0.09 to 4.1 seconds just to load a geo-tiff file (of 4096x4096 resolution). This loading time becomes significant when multiple map files are loaded.

However, when time-profiling the same application with sdk 1.26, it only takes 0.05 sec at most.

Is it possible to improve the loading time when using the new sdk 1.31?

global_mapper

A few others users had the same issue, although what is odd is that the same files loaded in the sample application did not experience the slowdown. In any case, we tracked down what was taking so long on their machines and fixed it. We have placed a new SDK build at http://www.globalmapper.com/GlobalMapperSDK_v132_beta.zip which should be faster.

Let me know if I can be of further assistance.

Thanks,

Mike
Global Mapper Support
support@globalmapper.com