Changeset afe420 in git for Singular/LIB/surf.lib

Timestamp:

Mar 2, 2001, 2:41:19 PM (23 years ago)

Author:

Eric Westenberger <westenb@…>

Branches:

(u'spielwiese', 'fe61d9c35bf7c61f2b6cbf1b56e25e2f08d536cc')

Children:

a3705ae0dbd6279402189c585e055106566f94f1

Parents:

89ff330823701e119667003326742b3326348ba6

Message:

* slightly changed documentation and error messages


git-svn-id: file:///usr/local/Singular/svn/trunk@5299 2c84dea3-7e68-4137-9b89-c4e89433aadc

File:

• Singular/LIB/surf.lib (modified) (7 diffs)

Singular/LIB/surf.lib

@@ -1 @@
-//last change: 13.02.2001 (Eric Westenberger)
+//last change: 02.03.2001 (Eric Westenberger)
 ///////////////////////////////////////////////////////////////////////////////
-version="$Id: surf.lib,v 1.18 2001-02-19 14:17:49 lossen Exp $";
+version="$Id: surf.lib,v 1.19 2001-03-02 13:41:19 westenb Exp $";
 category="Visualization";
 info="
@@ -18 +18 @@
 
 PROCEDURES:
- plot(I);  plots curves and surfaces
+ plot(I);  plots plane curves and surfaces
 ";
 
@@ -41 +41 @@
 proc  plot(ideal I,list #)
 "USAGE:   plot(I);  I ideal
-ASSUME: I involves only 2 or 3 variables
+ASSUME: I defines a plane curve or a surface
 RETURN: nothing
 NOTE: requires the external program 'surf' to be installed
@@ -48 +48 @@
 {
   string l="/tmp/surf"+string(system("pid"));
+  string err_mes; // string containing error messages
   def base=basering;
   intvec v=num_of_vars(I);
@@ -57 +58 @@
   if (n==0 or n>3)
   {
-    string err_mes="Cannot plot equations with "+string(n)+" variables";
+    err_mes="Cannot plot equations with "+string(n)+" variables";
     ERROR(err_mes);
   }
@@ -107 +108 @@
     else
     {
-      ERROR("cannot plot"+string(ncols(I))+"equations in"
-             +string(n)+"variables");
+      err_mes="cannot plot "+string(ncols(I))+" equations in "
+             +string(n)+" variables";
+      ERROR(err_mes);
     }
   }
@@ -120 +122 @@
   if (i!=0)
   {
-    ERROR("calling `surf` failed. (the shell return the error code"
+    err_mes = "calling `surf` failed. (the shell return the error code "
           +string(i)+")."+newline+
-    "probably the executable `surf` is not found.");
+    "probably the executable `surf` is not found.";
+    ERROR(err_mes);
   }
   i=system("sh","/bin/rm "+l);