Computing an inverse transform

The usage of the inverse NFFT is demonstrated by simple_test in examples/solver. Executing the MATLAB script glacier.m in the same directory produces the following two plots. Note that the corresponding C-file glacier.c is called from the MATLAB script.

Figure 5.2: Reconstruction of the glacier from samples at $M=8345$ nodes (vol87.dat from [27]) with $N_0=N_1=256$ and $40$ iterations.