DLMF:

Figure 11.3.12 (See in context.)

Figure 11.3.12: $\left|\mathop{\mathbf{K}_{{1}}\/}\nolimits\!\left(x+iy\right)\right|$ (principal value) for $-8\leq x\leq 8$ and $-3\leq y\leq 3$ . There is a cut along the negative real axis.

Annotations:

Symbols:: $\mathop{\mathbf{K}_{{\nu}}\/}\nolimits\!\left(z\right)$ : Struve function and : real variable
Keywords:: Struve functions and modified Struve functions
Permalink:: http://dlmf.nist.gov/11.3.F12.mag
Encodings:: Magnified png, VRML, X3D, pdf