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ancient-weatherstation
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chart fetchs data 

git-svn-id: file:///home/jan/tmp/wetterstation/trunk@81 dd492736-c11a-0410-ad51-8c26713eaf7f
This commit is contained in:
losinshi 2006-09-12 23:17:18 +00:00
parent e2cbaab837
commit 329ed6e6b4
2 changed files with 10 additions and 11 deletions
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15
cronjob/chart/image_file/image_data.c
View File

@ -44,7 +44,7 @@ pix_list_ptr get_pix_list(int c_width){
DEBUGOUT1("\nHole Daten...\n"); DEBUGOUT1("\nHole Daten...\n");
DEBUGOUT2(" Ein Pixel entspricht %f sekunden\n", seconds_per_pix); DEBUGOUT2(" Ein Pixel entspricht %f sekunden\n", seconds_per_pix);
snprintf(query, BUFFSIZE, "SELECT round(date_part('epoch', current_timestamp)) AS now, round(date_part('epoch', timestamp)) AS times, %s AS val FROM %s WHERE timestamp > (current_timestamp - INTERVAL '%d seconds') ORDER BY times DESC", img_cfg.table_field, table, img_cfg.show_interval ); snprintf(query, BUFFSIZE, "SELECT round(date_part('epoch', current_timestamp)) AS now, round(date_part('epoch', timestamp)) AS times, %s AS val FROM %s WHERE timestamp > (current_timestamp - INTERVAL '%d seconds') ORDER BY times ASC", img_cfg.table_field, table, img_cfg.show_interval );
res = pg_check_exec(conn, query); res = pg_check_exec(conn, query);
@ -64,40 +64,39 @@ pix_list_ptr get_pix_list(int c_width){
} }
PQclear(res); PQclear(res);
PQfinish(conn); PQfinish(conn);
free(query); free(query);
free(table); free(table);
free(conn_string); free(conn_string);
return NULL; return list_ptr;
} }
static pix_list_ptr add_pix_value(pix_list_ptr ptr, int coord, int value){ static pix_list_ptr add_pix_value(pix_list_ptr ptr, int coord, int value){
if(ptr == NULL){ if(ptr == NULL){
DEBUGOUT1("\nLese Daten ein:\n");
ptr = malloc(sizeof(pix_list_t)); ptr = malloc(sizeof(pix_list_t));
ptr->next = NULL; ptr->next = NULL;
ptr->x_pix_coord = 0; ptr->x_pix_coord = 0;
ptr->value_count = 0; ptr->value_count = 0;
ptr->value_sum = 0; ptr->value_sum = 0;
DEBUGOUT1(" Erstes Element generiert...\n");
} }
if(coord == ptr->x_pix_coord){ if(coord == ptr->x_pix_coord){
ptr->value_sum += value; ptr->value_sum += value;
ptr->value_count++; ptr->value_count++;
DEBUGOUT5(" Zu x-pos. %d %d. Wert (%d) hinzugefügt. Durchschn.: %d\n", ptr->x_pix_coord, ptr->value_count, value, (ptr->value_sum/ptr->value_count) );
} else { } else {
ptr->next = malloc(sizeof(pix_list_t)); ptr->next = malloc(sizeof(pix_list_t));
ptr = ptr->next; ptr = ptr->next;
ptr->x_pix_coord = coord;
ptr->value_sum = value; ptr->value_sum = value;
ptr->value_count = 1; ptr->value_count = 1;
ptr->next = NULL; ptr->next = NULL;
DEBUGOUT3(" An x-pos. %d Wert %d eingefuegt\n", ptr->x_pix_coord, ptr->value_sum);
} }
return ptr; return ptr;

2
cronjob/chart/image_file/testimage.conf
View File

@ -2,7 +2,7 @@ filename /home/jan/Testbild.png
headline Testbild headline Testbild
table_field temp table_field temp
gen_interval 15m gen_interval 15m
show_interval 1h show_interval 10h
label_interval 10m label_interval 10m
label_sum no label_sum no
width 400 width 400