This is due to the fact that the touch charts release doesn't have command in it. You should be in the ST2 directory, do the create app call to generate the application. Then in your application you should setup a path for Ext.chart to point to the location of the touch charts and then require the classes. Not you should be able to develop with them and also when you build it should build the required classes in the build. Don't forget about the SASS...
Here is my config.rb for an example:
And my app.scss:
# Get the directory that this configuration file exists in
dir = File.dirname(__FILE__)
# Load the sencha-touch framework automatically.
load File.join(dir, '..', '..', 'sdk', 'resources', 'themes')
# Load the charts framework automatically.
load File.join(dir, '..', '..', 'assets', 'charts-2.0.0', 'resources', 'themes')
# Compass configurations
sass_path = dir
css_path = File.join(dir, "..", "css")
# Require any additional compass plugins here.
images_dir = File.join("..", "images")
## This is for development
environment = :development
output_style = :expanded
## This is for production
#output_style = :compressed
#environment = :production
def chart_image(path, mime_type = nil)
path = path.value
images_path = File.join(File.dirname(__FILE__), "..", "..", "assets", "charts-2.0.0", "resources", "images", path)
inline_image_string(data(images_path), compute_mime_type(path, mime_type))
// You may remove any of the following modules that you
// do not use in order to create a smaller css file.
// Charts stuff here
// Your custom code goes here...