The program does not work with comma as a decimal separator

[igreenman]

Thank you for ngraph-gtk.

When I run the program and go to the Help -> Demonstration menu, I get error messages.

Works fine in this launch option: $ LANG=C ngraph

My OS: Archlinux

$ ngraph -V
Ngraph version 6.08.09
Copyright (C) 2003, Satoshi ISHIZAKA.

  compiler:
    gcc 10.2.0

  library:
    GTK+
     compile: 3.24.24
      linked: 3.24.24

    GLib
     compile: 2.66.4
      linked: 2.66.4

    Cairo
     compile: 1.17.4
      linked: 1.17.4

    Pango
     compile: 1.48.0
      linked: 1.48.0

    GtkSourceView
     compile: 3.24.12
      linked: 3.24.12

    readline
     compile: 8.1
      linked: 8.1

    GSL
     compile: 2.6
      linked: 2.6

$ locale
LANG=ru_RU.utf8
LC_CTYPE="ru_RU.utf8"
LC_NUMERIC="ru_RU.utf8"
LC_TIME="ru_RU.utf8"
LC_COLLATE="ru_RU.utf8"
LC_MONETARY="ru_RU.utf8"
LC_MESSAGES="ru_RU.utf8"
LC_PAPER="ru_RU.utf8"
LC_NAME="ru_RU.utf8"
LC_ADDRESS="ru_RU.utf8"
LC_TELEPHONE="ru_RU.utf8"
LC_MEASUREMENT="ru_RU.utf8"
LC_IDENTIFICATION="ru_RU.utf8"
LC_ALL=

[htrb]

Thank you for the report. As you mentioned, comma cannot be used as a decimal separator in Ngraph-GTK. Now I am planning to improve the behavior as follows.

• Comma can be used as a decimal separator in a data-file depend on the setting of a data object.
• Only period can be used as a decimal separator in settings (user-interfaces).

[htrb]

I have fixed the problem as follows.

• The decimal point symbol can be selected from "period" or "comma" in "Graph"-"Page setup".
  • When the decimal point symbol is selected as "period (.)", only the period is recognized as the decimal point symbol in the data file.
  • When the decimal point symbol is "comma (,)", both the comma and the period are recognized as the decimal point symbol in a data file.
• The following drawing depend on the setting of the decimal point symbol.
  • Axis scale numbering
  • Legend text formatting with %pf
  • The printf function and conversion of numbers to strings in a formula conversion.
• The default value of the decimal point symbol can be specified in "Preference"-"Miscellaneous".
  • If the default value is "locale", it will be selected according to the system language setting.

I will release the next version in this month.

[igreenman]

Thank you.