r - Mountain like plot for data in Square matrix -

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i have data square matrix. want plot meshgrid in matlab (mountains color gradients). also, if there big cliff, want label it. shown below

enter image description here

the data have 

            _92765  _222156 _384259 _384249 _384247 _384250 _92765  -1  3.4 4.85106 8.12927 8.462   9.12643 _222156 3.4 -1  1.50877 3.66383 3.58554 3.69655 _384259 4.85106 1.50877 -1  4.48433 4.51367 4.14421 _384249 8.12927 3.66383 4.48433 -1  0.288   0.252 _384247 8.462   3.58554 4.51367 0.288   -1  0.196 _384250 9.12643 3.69655 4.14421 0.252   0.196   -1

how can go it? thanks

have looked @ wireframe() function in lattice library?

here example on-line help:

library(lattice)     wireframe(volcano, shade = true,     aspect = c(61/87, 0.4),     light.source = c(10,0,10))

enter image description here


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