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    <p>For 3D matrixes, I would usually convert them to VRML3D and look at them using ParallelGraphics/Cortona3D.</p> <p>Otherwise, you need some sort of projection or "slicing" of the matrix in order to see <em>all</em> of the matrix.</p> <p>This is a C implementation to dump a 3D matrix to a PNG file. Compile with</p> <pre><code>gcc -W -Wall -o bin2png bin2png.c -lpng </code></pre> <p>Code:</p> <pre><code>#include &lt;stdio.h&gt; #include &lt;stdint.h&gt; #include &lt;stdlib.h&gt; #include &lt;errno.h&gt; #include &lt;png.h&gt; static png_structp png_ptr; static png_infop info_ptr; /** |&lt;--- W ----&gt;| +------------+ - | 18 19 20| | +-------------+ | | | 9 10 11 | | | +-------------+ |23| +--&gt; H | 0 1 2 | | | | | |14 | | | | | |26| | | 3 4 5 | |--+ + - | |17 | / | |---+ +--&gt; D | 6 7 8 | / +-------------+ + @param matrix a 3D matrix. Element [i,j,k] is A[H*(D*k + j) + i] @param W width @param H height @param D depth @param WW width in W-sized chunks of target image @param HH height in H-sized chunks of target image @param filename output filename in PNG format Output image: |&lt;----- WW = 2 ---&gt;| +------------------+ - | 0 1 2 9 10 11| | | 3 4 5 12 13 14| | | 6 7 8 15 16 17| HH = 2 | 18 19 20 | | | 21 22 23 blank | | | 24 25 26 | | +------------------+ - NOTE: W*WW and H*HH may not exceed 32760. Return: 0 success -1 cannot create PNG structure (write) -2 cannot create PNG structure (info) -3 out of memory -4 cannot create output file */ int matrix3D_to_png(uint8_t *matrix, size_t W, size_t H, size_t D, size_t WW, size_t HH, char *filename) { FILE *fp; png_color palette[16]; png_byte transparencies[16]; uint32_t y; size_t x; uint8_t *row; if( !(png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL)) ) return -1; if( !(info_ptr = png_create_info_struct(png_ptr)) || setjmp(png_jmpbuf(png_ptr)) ){ /* If we get here, libpng had a problem writing */ png_destroy_write_struct(&amp;png_ptr, &amp;info_ptr); return -2; } if (NULL == (row = malloc(WW*W + 7))) { return -3; } /* Create 16-color palette for representation */ #define SETPAL(i,r,g,b,a) \ palette[i].red = r; palette[i].green = g; palette[i].blue = b; transparencies[i] = 255-a; // We will draw the matrix in red if points are nonzero, black if zero; outside the matrix // we use transparent white. #define INDEX_IF_ZERO 0 #define INDEX_IF_NONZERO 3 #define INDEX_IF_BLANK 15 SETPAL(0, 0, 0, 0, 0); // Black SETPAL(1, 255, 255, 255, 0); // Opaque white SETPAL(2, 192, 192, 192, 0); // Light gray SETPAL(3, 255, 0, 0, 0); // Red SETPAL(4, 0, 255, 0, 0); // Green SETPAL(5, 0, 0, 255, 0);// Blue SETPAL(6, 255, 0, 0, 128); // Halftransparent red SETPAL(7, 0, 255, 0, 128); // green SETPAL(8, 0, 0, 255, 128); // blue SETPAL(9, 255, 0, 0, 0); // red again :-) SETPAL(10, 0, 255, 0, 0); SETPAL(11, 0, 0, 255, 0); SETPAL(12, 255, 0, 0, 0); SETPAL(13, 0, 255, 0, 0); SETPAL(14, 0, 0, 255, 0); SETPAL(15, 255, 255, 255, 255); // Transparent white /* End palette */ /* Create filename */ if (NULL == (fp = fopen(filename, "w"))) { fprintf(stderr, "cannot open output '%s': %s\n", filename, strerror(errno)); return -4; } png_init_io(png_ptr, fp); png_set_IHDR(png_ptr, info_ptr, W*WW, H*HH, 8, PNG_COLOR_TYPE_PALETTE, PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_DEFAULT, PNG_FILTER_TYPE_DEFAULT); png_set_PLTE(png_ptr, info_ptr, palette, 16); png_set_tRNS(png_ptr, info_ptr, transparencies, 16, NULL); png_set_compression_level(png_ptr, Z_BEST_COMPRESSION); png_write_info(png_ptr, info_ptr); for (y = 0; y &lt; H*HH; y++) { size_t mx = y/H; mx = (mx*H*WW + (y%H))*W; for (x = 0; x &lt; WW; x++) { if (mx+x*H &gt;= H*D) memset(row+x*W, INDEX_IF_BLANK, W); else { size_t ii; for (ii = 0; ii &lt; W; ii++) row[x*W+ii] = (matrix[mx+x*W*H+ii]) ? INDEX_IF_NONZERO : INDEX_IF_ZERO; } } png_write_row(png_ptr, row); } png_write_end(png_ptr, NULL /*info_ptr*/); png_destroy_write_struct(&amp;png_ptr, &amp;info_ptr); fclose(fp); free(row); return 0; } int main(int argc, char **argv) { FILE *fp; uint8_t *matrix; size_t W, H, D, WW, HH, i; if (8 != argc) { fprintf(stderr, "Syntax: %s input output.png width height depth TileX TileY\n", *argv); return EXIT_FAILURE; } W = atol(argv[3]); H = atol(argv[4]); D = atol(argv[5]); WW = atol(argv[6]); HH = atol(argv[7]); if ((W * WW &gt; 32767)||(H * HH) &gt; 32767) { fprintf(stderr, "Output image would be too large\n"); return EXIT_FAILURE; } if (WW*HH &lt; D) { fprintf(stderr, "WARNING: matrix does not fit into output image\n"); } if (WW*HH &gt; D*2) { fprintf(stderr, "WARNING: output image is far larger than input matrix\n"); } if (NULL == (fp = fopen(argv[1], "r"))) { fprintf(stderr, "Input file not found\n"); return EXIT_FAILURE; } if (NULL == (matrix = malloc(W*H*D))) { fprintf(stderr, "Out of memory: matrix too large\n"); return EXIT_FAILURE; } for (i = 0; i &lt; D; i++) { int ret; if ((int)H != (ret = fread(matrix + W*H*i, W, H, fp))) { fprintf(stderr, "Read error at plane %d (reading %d rows of %d elements, expecting %d, got %d)\n", (int)i, (int)W, (int)H, (int)H, ret); fclose(fp); return EXIT_FAILURE; } } if (matrix3D_to_png(matrix, W, H, D, WW, HH, argv[2])) { fprintf(stderr, "Error in creating output PNG '%s'\n", argv[2]); return EXIT_FAILURE; } return EXIT_SUCCESS; } </code></pre>
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