1. 1. ubuntu, debian, mint .. script
   2. to cut and adjust LGM sealevel
   3. and blur ETOPO1 grid

sudo apt install qgis saga

ingrid="ETOPO1_Ice_g_gmt4.grd" outgrid="europe_large_1.nc"

rect=-R-10/60/30/65

gmt grdcut $ingrid -G$outgrid $rect -V

saga_cmd grid_filter 1 -INPUT europe_large_1.nc -RESULT europe_large_1_510.nc -SIGMA 5 -RADIUS 10 gdal_translate -of GMT europe_large_1_510.sdat europe_large_1_510.nc gdal_calc.py -A europe_large_1_510.nc --outfile=result.tif --calc="(A+120)" gdal_calc.py -A result.tif --outfile=europe_large_1_lgm_510.tif --calc="((A>0)*A)" gdal_translate -of GMT europe_large_1_lgm_510.tif europe_large_1_lgm_510.nc gmt grdgradient europe_large_1_lgm_510.nc -Geurope_large_1_lgm_510_shade.int -A0 -Nt -fg

1. cp europe_large_1_lgm_510.nc ..
2. cp europe_large_1_lgm_510_shade.int ..

1. include <stdio.h>
2. include <stdlib.h>
3. include <string.h>
4. include <fcntl.h>

1. define NAMELEN 3200
2. define ROWLEN 320000

// one segment on line int segment=0;

// line numbers

int output_type=0;

char iname[NAMELEN]="in.geojson"; char oname[NAMELEN]="out.csv";

int json2_lonlat(char *iname, char *oname) {

 FILE *fin=NULL;
 FILE *fout=NULL;
 int lukko=0;
 char c=0;
 int pitu=0;
 int rinu=1;
 char *p=NULL;

 char row[ROWLEN];
 char row2[ROWLEN];

 memset(row,0,ROWLEN);
 memset(row2,0,ROWLEN);

 fin=fopen(iname, "r");

 if(!fin)
   {
    printf("\n Input file open error. Maybe there ot file or read  permission.");
     return(-1);
   }

 fout=fopen("tmp.txt", "w");

 if(!fout)
   {
    printf("\n Output file open error. Maybe no permission or your disk is full. ");
    return(-1);
   }

 while(!feof(fin))
  {
   c=fgetc(fin);

if(segment==1) { if(c==10) { //fprintf(stdout, "\n>SEGU\n"); //fputc(10,fout); //fputc(13,fout); fprintf(fout, "\n>\n "); } }

   if(c=='[')
   {

fprintf(fout, "\n");

    // printf("\n ");
   continue;
   }
   if(c==']')
   {
   continue;
   }
    if(c==',')
   {
   continue;
   }
     if(c=='{')
   {
   continue;
   }
      if(c=='}')
   {
   continue;
   }

   fputc(c,fout);
 //  printf("%c",(char *)c);

  }

 fclose(fout);
 fclose(fin);

//system("iconv -f iso8859-14 -t utf8 tmp.txt > tmp2.txt");

// printf("\b BGK BRK"); // exit(-1);

 fin=fopen("tmp.txt", "r");

 if(!fin)
   {
    printf("\n Input file open error.");
     return(-1);
   }

// fout=fopen("outmp.txt", "w");

 fout=fopen(oname, "w");

 if(!fout)
   {
    printf("\n Output file open error.");
    return(-1);
   }

int alussa=1;
int edu=0;

 while(!feof(fin))
   {
   pitu=0;

lukko=0; memset(row,0,ROWLEN); memset(row2,0,ROWLEN); // fread(row,1,ROWLEN,fin); fgets(row,ROWLEN,fin);

pitu=strlen(row);

if (strchr(row, '\"') ) { lukko=1; }

if (pitu<5 ) { if(alussa==0) { if(edu==0) { if(segment==1) { fprintf(fout, ">\n"); edu=1; }} } lukko=1; }

if(lukko==0) { alussa=0; edu=0; // fprintf(stdout, "%s",row); strcpy(row2,row);

char *p=NULL; p=strchr(row2,' '); if(p) *p=','; p++; p=strchr(p,' '); if(p) *p=',';

if(output_type==1) { fprintf(fout, "%i%s",rinu, row2); } else { p=row2+1; fprintf(fout, "%s",p); }

rinu++; }

   }

// system("iconv -f iso8859-14 -t utf8 outmp.txt > out.txt");

 fclose(fout);
 fclose(fin);

 return(0);

}

int params(int argc, char **argv) {

int n=0;
     char *p=NULL;

 printf("\n Sample usage for points: geojson2csv in.geojson -s1");
 printf("\n For lines etc. use -segm : geojson2csv in.geojson -s1 -segm");

// defaults!

output_type=0; segment=0;

  for(n=0;n<argc;n++)
   {

printf("\n %s ", argv[n] );

	 if(!strcmp(argv[n],"-s1"))

{ output_type=1; continue; }

// segmented output if(!strcmp(argv[n],"-segm")) { segment=1; // printf("n Seg"); continue; } // no segmented output if(!strcmp(argv[n],"-segm-")) { segment=0; continue; }

}

   if (argv[1] )
   {

memset(iname,0,NAMELEN); memset(oname,0,NAMELEN); strcpy(iname,argv[1]); p=NULL; p=strchr(iname,'.'); *p=0; strcpy(oname, iname); strcat(oname,".csv"); *p='.';

   }

   if (argv[2] )
   {

if(strcmp(argv[2],"-s1")) { if(strcmp(argv[2],"-segm")) { if(strcmp(argv[2],"-segm-")) { memset(oname,0,NAMELEN); strcpy(oname,argv[2]); }}}

   }

printf("\n Iname %s Oname %s ", iname, oname); printf("\n Output_type %i .", output_type); printf("\n Segmented %i .", segment);

   printf("\n");

return(0); }

int main(int argc, char **argv) {

//  segment=1;
  params(argc, argv);
  printf("\n Konv ... \n");
 //    json2_lonlat("mysli1.geojson", "mysli1.csv");

  json2_lonlat(iname, oname);

  printf("\n Yess. \n");
  return(0);

}