Actual source code: lgc.c
petsc-3.6.4 2016-04-12
2: #include <../src/sys/classes/draw/utils/lgimpl.h> /*I "petscdraw.h" I*/
3: #include <petscviewer.h>
4: PetscClassId PETSC_DRAWLG_CLASSID = 0;
8: /*@
9: PetscDrawLGGetAxis - Gets the axis context associated with a line graph.
10: This is useful if one wants to change some axis property, such as
11: labels, color, etc. The axis context should not be destroyed by the
12: application code.
14: Not Collective, if PetscDrawLG is parallel then PetscDrawAxis is parallel
16: Input Parameter:
17: . lg - the line graph context
19: Output Parameter:
20: . axis - the axis context
22: Level: advanced
24: @*/
25: PetscErrorCode PetscDrawLGGetAxis(PetscDrawLG lg,PetscDrawAxis *axis)
26: {
28: if (lg && ((PetscObject)lg)->classid == PETSC_DRAW_CLASSID) {
29: *axis = 0;
30: return(0);
31: }
34: *axis = lg->axis;
35: return(0);
36: }
40: /*@
41: PetscDrawLGGetDraw - Gets the draw context associated with a line graph.
43: Not Collective, if PetscDrawLG is parallel then PetscDraw is parallel
45: Input Parameter:
46: . lg - the line graph context
48: Output Parameter:
49: . draw - the draw context
51: Level: intermediate
53: @*/
54: PetscErrorCode PetscDrawLGGetDraw(PetscDrawLG lg,PetscDraw *draw)
55: {
59: if (((PetscObject)lg)->classid == PETSC_DRAW_CLASSID) *draw = (PetscDraw)lg;
60: else {
62: *draw = lg->win;
63: }
64: return(0);
65: }
70: /*@
71: PetscDrawLGSPDraw - Redraws a line graph.
73: Not Collective,but ignored by all processors except processor 0 in PetscDrawLG
75: Input Parameter:
76: . lg - the line graph context
78: Level: intermediate
80: .seealso: PetscDrawLGDraw(), PetscDrawSPDraw()
82: Developer Notes: This code cheats and uses the fact that the LG and SP structs are the same
84: @*/
85: PetscErrorCode PetscDrawLGSPDraw(PetscDrawLG lg,PetscDrawSP spin)
86: {
87: PetscDrawLG sp = (PetscDrawLG)spin;
88: PetscReal xmin,xmax,ymin,ymax;
90: int i,j,dim,nopts,rank;
91: PetscDraw draw = lg->win;
94: if (lg && ((PetscObject)lg)->classid == PETSC_DRAW_CLASSID) return(0);
98: xmin = PetscMin(lg->xmin,sp->xmin);
99: ymin = PetscMin(lg->ymin,sp->ymin);
100: xmax = PetscMax(lg->xmax,sp->xmax);
101: ymax = PetscMax(lg->ymax,sp->ymax);
103: PetscDrawClear(draw);
104: PetscDrawAxisSetLimits(lg->axis,xmin,xmax,ymin,ymax);
105: PetscDrawAxisDraw(lg->axis);
107: MPI_Comm_rank(PetscObjectComm((PetscObject)lg),&rank);
108: if (!rank) {
110: dim = lg->dim;
111: nopts = lg->nopts;
112: for (i=0; i<dim; i++) {
113: for (j=1; j<nopts; j++) {
114: PetscDrawLine(draw,lg->x[(j-1)*dim+i],lg->y[(j-1)*dim+i],lg->x[j*dim+i],lg->y[j*dim+i],PETSC_DRAW_BLACK+i);
115: if (lg->use_markers) {
116: PetscDrawMarker(draw,lg->x[j*dim+i],lg->y[j*dim+i],PETSC_DRAW_RED);
117: }
118: }
119: }
121: dim = sp->dim;
122: nopts = sp->nopts;
123: for (i=0; i<dim; i++) {
124: for (j=0; j<nopts; j++) {
125: PetscDrawMarker(draw,sp->x[j*dim+i],sp->y[j*dim+i],PETSC_DRAW_RED);
126: }
127: }
128: }
129: PetscDrawFlush(lg->win);
130: PetscDrawPause(lg->win);
131: return(0);
132: }
137: /*@
138: PetscDrawLGCreate - Creates a line graph data structure.
140: Collective over PetscDraw
142: Input Parameters:
143: + draw - the window where the graph will be made.
144: - dim - the number of curves which will be drawn
146: Output Parameters:
147: . outctx - the line graph context
149: Level: intermediate
151: Concepts: line graph^creating
153: .seealso: PetscDrawLGDestroy()
154: @*/
155: PetscErrorCode PetscDrawLGCreate(PetscDraw draw,PetscInt dim,PetscDrawLG *outctx)
156: {
158: PetscBool isnull;
159: PetscObject obj = (PetscObject)draw;
160: PetscDrawLG lg;
165: PetscObjectTypeCompare(obj,PETSC_DRAW_NULL,&isnull);
166: if (isnull) {
167: PetscDrawOpenNull(PetscObjectComm((PetscObject)obj),(PetscDraw*)outctx);
168: return(0);
169: }
170: PetscHeaderCreate(lg,PETSC_DRAWLG_CLASSID,"PetscDrawLG","Line graph","Draw",PetscObjectComm((PetscObject)obj),PetscDrawLGDestroy,NULL);
172: lg->view = NULL;
173: lg->destroy = NULL;
174: lg->nopts = 0;
175: lg->win = draw;
176: lg->dim = dim;
177: lg->xmin = 1.e20;
178: lg->ymin = 1.e20;
179: lg->xmax = -1.e20;
180: lg->ymax = -1.e20;
182: PetscMalloc2(dim*CHUNCKSIZE,&lg->x,dim*CHUNCKSIZE,&lg->y);
183: PetscLogObjectMemory((PetscObject)lg,2*dim*CHUNCKSIZE*sizeof(PetscReal));
185: lg->len = dim*CHUNCKSIZE;
186: lg->loc = 0;
187: lg->use_markers= PETSC_FALSE;
189: PetscDrawAxisCreate(draw,&lg->axis);
190: PetscLogObjectParent((PetscObject)lg,(PetscObject)lg->axis);
192: *outctx = lg;
193: return(0);
194: }
198: /*@
199: PetscDrawLGSetColors - Sets the color of each line graph drawn
201: Logically Collective over PetscDrawLG
203: Input Parameter:
204: + lg - the line graph context.
205: - colors - the colors
207: Level: intermediate
209: Concepts: line graph^setting number of lines
211: @*/
212: PetscErrorCode PetscDrawLGSetColors(PetscDrawLG lg,const int *colors)
213: {
217: if (lg && ((PetscObject)lg)->classid == PETSC_DRAW_CLASSID) return(0);
219: PetscFree(lg->colors);
220: PetscMalloc1(lg->dim,&lg->colors);
221: PetscMemcpy(lg->colors,colors,lg->dim*sizeof(int));
222: return(0);
223: }
228: /*@C
229: PetscDrawLGSetLegend - sets the names of each curve plotted
231: Logically Collective over PetscDrawLG
233: Input Parameter:
234: + lg - the line graph context.
235: - names - the names for each curve
237: Level: intermediate
239: Concepts: line graph^setting number of lines
241: @*/
242: PetscErrorCode PetscDrawLGSetLegend(PetscDrawLG lg,const char *const *names)
243: {
245: PetscInt i;
248: if (lg && ((PetscObject)lg)->classid == PETSC_DRAW_CLASSID) return(0);
251: if (lg->legend) {
252: for (i=0; i<lg->dim; i++) {
253: PetscFree(lg->legend[i]);
254: }
255: PetscFree(lg->legend);
256: }
257: if (names) {
258: PetscMalloc1(lg->dim,&lg->legend);
259: for (i=0; i<lg->dim; i++) {
260: PetscStrallocpy(names[i],&lg->legend[i]);
261: }
262: }
263: return(0);
264: }
268: /*@
269: PetscDrawLGGetDimension - Change the number of lines that are to be drawn.
271: Logically Collective over PetscDrawLG
273: Input Parameter:
274: . lg - the line graph context.
276: Output Parameter:
277: . dim - the number of curves.
279: Level: intermediate
281: Concepts: line graph^setting number of lines
283: @*/
284: PetscErrorCode PetscDrawLGGetDimension(PetscDrawLG lg,PetscInt *dim)
285: {
287: if (lg && ((PetscObject)lg)->classid == PETSC_DRAW_CLASSID) return(0);
289: *dim = lg->dim;
290: return(0);
291: }
295: /*@
296: PetscDrawLGSetDimension - Change the number of lines that are to be drawn.
298: Logically Collective over PetscDrawLG
300: Input Parameter:
301: + lg - the line graph context.
302: - dim - the number of curves.
304: Level: intermediate
306: Concepts: line graph^setting number of lines
308: @*/
309: PetscErrorCode PetscDrawLGSetDimension(PetscDrawLG lg,PetscInt dim)
310: {
312: PetscInt i;
315: if (lg && ((PetscObject)lg)->classid == PETSC_DRAW_CLASSID) return(0);
318: if (lg->dim == dim) return(0);
320: PetscFree2(lg->x,lg->y);
321: if (lg->legend) {
322: for (i=0; i<lg->dim; i++) {
323: PetscFree(lg->legend[i]);
324: }
325: PetscFree(lg->legend);
326: }
327: PetscFree(lg->colors);
328: lg->dim = dim;
329: PetscMalloc2(dim*CHUNCKSIZE,&lg->x,dim*CHUNCKSIZE,&lg->y);
330: PetscLogObjectMemory((PetscObject)lg,2*dim*CHUNCKSIZE*sizeof(PetscReal));
331: lg->len = dim*CHUNCKSIZE;
332: return(0);
333: }
337: /*@
338: PetscDrawLGReset - Clears line graph to allow for reuse with new data.
340: Logically Collective over PetscDrawLG
342: Input Parameter:
343: . lg - the line graph context.
345: Level: intermediate
347: Concepts: line graph^restarting
349: @*/
350: PetscErrorCode PetscDrawLGReset(PetscDrawLG lg)
351: {
353: if (lg && ((PetscObject)lg)->classid == PETSC_DRAW_CLASSID) return(0);
355: lg->xmin = 1.e20;
356: lg->ymin = 1.e20;
357: lg->xmax = -1.e20;
358: lg->ymax = -1.e20;
359: lg->loc = 0;
360: lg->nopts = 0;
361: return(0);
362: }
366: /*@
367: PetscDrawLGDestroy - Frees all space taken up by line graph data structure.
369: Collective over PetscDrawLG
371: Input Parameter:
372: . lg - the line graph context
374: Level: intermediate
376: .seealso: PetscDrawLGCreate()
377: @*/
378: PetscErrorCode PetscDrawLGDestroy(PetscDrawLG *lg)
379: {
381: PetscInt i;
384: if (!*lg) return(0);
387: if (--((PetscObject)(*lg))->refct > 0) {*lg = 0; return(0);}
388: if (((PetscObject)(*lg))->classid == PETSC_DRAW_CLASSID) {
389: PetscObjectDestroy((PetscObject*)lg);
390: return(0);
391: }
392: if ((*lg)->legend) {
393: for (i=0; i<(*lg)->dim; i++) {
394: PetscFree((*lg)->legend[i]);
395: }
396: PetscFree((*lg)->legend);
397: }
398: PetscFree((*lg)->colors);
399: PetscDrawAxisDestroy(&(*lg)->axis);
400: PetscFree2((*lg)->x,(*lg)->y);
401: PetscHeaderDestroy(lg);
402: return(0);
403: }
406: /*@
407: PetscDrawLGSetUseMarkers - Causes LG to draw a marker for each data-point.
409: Not Collective, but ignored by all processors except processor 0 in PetscDrawLG
411: Input Parameters:
412: + lg - the linegraph context
413: - flg - should mark each data point
415: Options Database:
416: . -lg_use_markers <true,false>
418: Level: intermediate
420: Concepts: line graph^showing points
422: @*/
423: PetscErrorCode PetscDrawLGSetUseMarkers(PetscDrawLG lg,PetscBool flg)
424: {
426: if (lg && ((PetscObject)lg)->classid == PETSC_DRAW_CLASSID) return(0);
428: lg->use_markers = flg;
429: return(0);
430: }
432: #if defined(PETSC_HAVE_SETJMP_H) && defined(PETSC_HAVE_X)
433: #include <X11/Xlib.h>
434: #include <X11/Xutil.h>
435: #include <setjmp.h>
436: static jmp_buf PetscXIOErrorJumpBuf;
437: static void PetscXIOHandler(Display *dpy)
438: {
439: longjmp(PetscXIOErrorJumpBuf, 1);
440: }
441: #endif
445: /*@
446: PetscDrawLGDraw - Redraws a line graph.
448: Not Collective,but ignored by all processors except processor 0 in PetscDrawLG
450: Input Parameter:
451: . lg - the line graph context
453: Level: intermediate
455: .seealso: PetscDrawSPDraw(), PetscDrawLGSPDraw()
457: @*/
458: PetscErrorCode PetscDrawLGDraw(PetscDrawLG lg)
459: {
460: PetscReal xmin=lg->xmin,xmax=lg->xmax,ymin=lg->ymin,ymax=lg->ymax;
462: int i,j,dim = lg->dim,nopts = lg->nopts,rank,cl;
463: PetscDraw draw = lg->win;
464: PetscBool isnull;
467: if (lg && ((PetscObject)lg)->classid == PETSC_DRAW_CLASSID) return(0);
469: PetscDrawIsNull(lg->win,&isnull);
470: if (isnull) return(0);
472: #if defined(PETSC_HAVE_SETJMP_H) && defined(PETSC_HAVE_X)
473: if (!setjmp(PetscXIOErrorJumpBuf)) XSetIOErrorHandler((XIOErrorHandler)PetscXIOHandler);
474: else {
475: XSetIOErrorHandler(NULL);
476: PetscDrawSetType(draw,PETSC_DRAW_NULL);
477: return(0);
478: }
479: #endif
481: PetscDrawCheckResizedWindow(draw);
482: PetscDrawClear(draw);
483: PetscDrawAxisSetLimits(lg->axis,xmin,xmax,ymin,ymax);
484: PetscDrawAxisDraw(lg->axis);
486: MPI_Comm_rank(PetscObjectComm((PetscObject)lg),&rank);
487: if (!rank) {
488: for (i=0; i<dim; i++) {
489: for (j=1; j<nopts; j++) {
490: if (lg->colors) cl = lg->colors[i];
491: else cl = PETSC_DRAW_BLACK+i;
492: PetscDrawLine(draw,lg->x[(j-1)*dim+i],lg->y[(j-1)*dim+i],lg->x[j*dim+i],lg->y[j*dim+i],cl);
493: if (lg->use_markers) {
494: PetscDrawMarker(draw,lg->x[j*dim+i],lg->y[j*dim+i],cl);
495: }
496: }
497: }
498: }
499: if (!rank && lg->legend) {
500: PetscReal xl,yl,xr,yr,tw,th;
501: size_t len,mlen = 0;
502: int cl;
503: PetscDrawGetCoordinates(draw,&xl,&yl,&xr,&yr);
504: PetscDrawStringGetSize(draw,&tw,&th);
505: for (i=0; i<dim; i++) {
506: PetscStrlen(lg->legend[i],&len);
507: mlen = PetscMax(mlen,len);
508: }
509: PetscDrawLine(draw,xr - (mlen + 8)*tw,yr - 3*th,xr - 2*tw,yr - 3*th,PETSC_DRAW_BLACK);
510: PetscDrawLine(draw,xr - (mlen + 8)*tw,yr - 3*th,xr - (mlen + 8)*tw,yr - (4+lg->dim)*th,PETSC_DRAW_BLACK);
511: for (i=0; i<dim; i++) {
512: cl = (lg->colors ? lg->colors[i] : i + 1);
513: PetscDrawLine(draw,xr - (mlen + 6.7)*tw,yr - (4 + i)*th,xr - (mlen + 3.2)*tw,yr - (4 + i)*th,cl);
514: PetscDrawString(draw,xr - (mlen + 3)*tw,yr - (4.5 + i)*th,PETSC_DRAW_BLACK,lg->legend[i]);
515: }
516: PetscDrawLine(draw,xr - 2*tw,yr - 3*th,xr - 2*tw,yr - (4+lg->dim)*th,PETSC_DRAW_BLACK);
517: PetscDrawLine(draw,xr - (mlen + 8)*tw,yr - (4+lg->dim)*th,xr - 2*tw,yr - (4+lg->dim)*th,PETSC_DRAW_BLACK);
518: }
519: if (!rank) {PetscDrawFlush(lg->win);}
520: PetscDrawPause(lg->win);
521: #if defined(PETSC_HAVE_SETJMP_H) && defined(PETSC_HAVE_X)
522: XSetIOErrorHandler(NULL);
523: #endif
524: return(0);
525: }
529: /*@
530: PetscDrawLGView - Prints a line graph.
532: Not collective
534: Input Parameter:
535: . lg - the line graph context
537: Level: beginner
539: .keywords: draw, line, graph
540: @*/
541: PetscErrorCode PetscDrawLGView(PetscDrawLG lg,PetscViewer viewer)
542: {
543: PetscReal xmin=lg->xmin, xmax=lg->xmax, ymin=lg->ymin, ymax=lg->ymax;
544: PetscInt i, j, dim = lg->dim, nopts = lg->nopts;
548: if (lg && ((PetscObject)lg)->classid == PETSC_DRAW_CLASSID) return(0);
550: if (nopts < 1) return(0);
551: if (xmin > xmax || ymin > ymax) return(0);
553: if (!viewer){
554: PetscViewerASCIIGetStdout(PetscObjectComm((PetscObject)lg),&viewer);
555: }
556: PetscObjectPrintClassNamePrefixType((PetscObject)lg,viewer);
557: for (i = 0; i < dim; i++) {
558: PetscViewerASCIIPrintf(viewer, "Line %D>\n", i);
559: for (j = 0; j < nopts; j++) {
560: PetscViewerASCIIPrintf(viewer, " X: %g Y: %g\n", (double)lg->x[j*dim+i], (double)lg->y[j*dim+i]);
561: }
562: }
563: return(0);
564: }
568: /*@
569: PetscDrawLGSetFromOptions - Sets options related to the PetscDrawLG
571: Collective over PetscDrawLG
573: Options Database:
575: Level: intermediate
577: Concepts: line graph^creating
579: .seealso: PetscDrawLGDestroy(), PetscDrawLGCreate()
580: @*/
581: PetscErrorCode PetscDrawLGSetFromOptions(PetscDrawLG lg)
582: {
584: PetscBool flg=PETSC_FALSE, set;
587: PetscOptionsGetBool(NULL,"-lg_use_markers",&flg,&set);
588: if (set) {PetscDrawLGSetUseMarkers(lg,flg);}
589: return(0);
590: }