Here is a list of all variables with links to the structures/unions they belong to:

- r -

radius : dt_color_checker_t, dt_develop_blend_params_t, dt_iop_bilateral_gui_data_t, dt_iop_bilateral_params_t, dt_iop_blurs_gui_data_t, dt_iop_blurs_params_t, dt_iop_cacorrectrgb_gui_data_t, dt_iop_cacorrectrgb_params_t, dt_iop_defringe_params_t, dt_iop_denoiseprofile_data_t, dt_iop_denoiseprofile_gui_data_t, dt_iop_denoiseprofile_params_t, dt_iop_denoiseprofile_params_v10_t, dt_iop_denoiseprofile_params_v1_t, dt_iop_denoiseprofile_params_v4_t, dt_iop_denoiseprofile_params_v5_t, dt_iop_denoiseprofile_params_v6_t, dt_iop_denoiseprofile_params_v7_t, dt_iop_denoiseprofile_params_v8_t, dt_iop_denoiseprofile_params_v9_t, dt_iop_diffuse_gui_data_t, dt_iop_diffuse_params_t, dt_iop_dither_data_t, dt_iop_dither_gui_data_t, dt_iop_dither_params_t, dt_iop_lowpass_data_t, dt_iop_lowpass_gui_data_t, dt_iop_lowpass_params1_t, dt_iop_lowpass_params2_t, dt_iop_lowpass_params3_t, dt_iop_lowpass_params_t, dt_iop_nlmeans_gui_data_t, dt_iop_nlmeans_params_t, dt_iop_rlce_data_t, dt_iop_rlce_params_t, dt_iop_shadhi_data_t, dt_iop_shadhi_gui_data_t, dt_iop_shadhi_params1_t, dt_iop_shadhi_params2_t, dt_iop_shadhi_params3_t, dt_iop_shadhi_params4_t, dt_iop_shadhi_params_t, dt_iop_sharpen_data_t, dt_iop_sharpen_gui_data_t, dt_iop_sharpen_params_t, dt_iop_toneequalizer_data_t, dt_liquify_warp_t, dt_masks_point_circle_t, dt_masks_point_ellipse_t, pair, spot_t
radius_1 : dt_iop_censorize_gui_data_t, dt_iop_censorize_params_t
radius_2 : dt_iop_censorize_gui_data_t, dt_iop_censorize_params_t
radius_center : dt_iop_diffuse_gui_data_t, dt_iop_diffuse_params_t
radius_scale : dt_iop_defringe_gui_data_t
random : dt_iop_dither_data_t, dt_iop_dither_gui_data_t, dt_iop_dither_params_t
range : dt_iop_bilat_gui_data_t, dt_iop_colorreconstruct_data_t, dt_iop_colorreconstruct_gui_data_t, dt_iop_colorreconstruct_params1_t, dt_iop_colorreconstruct_params2_t, dt_iop_colorreconstruct_params_t, dt_iop_dither_data_t, dt_iop_dither_gui_data_t, dt_iop_dither_params_t
range_label : dt_iop_dither_gui_data_t
rank : _slideshow_buf_t, dt_slideshow_format_t
raster_box : dt_iop_gui_blend_data_t
raster_combo : dt_iop_gui_blend_data_t
raster_inited : dt_iop_gui_blend_data_t
raster_mask : dt_iop_module_t
raster_mask_id : dt_develop_blend_params_t
raster_mask_instance : dt_develop_blend_params_t
raster_mask_invert : dt_develop_blend_params_t
raster_mask_source : dt_develop_blend_params_t
raster_masks : dt_dev_pixelpipe_iop_t
raster_polarity : dt_iop_gui_blend_data_t
rating : dt_thumbnail_t, lr_data_t
ratio : dt_color_checker_t, dt_map_location_data_t
ratio_d : dt_iop_clipping_params_t, dt_iop_crop_params_t
ratio_n : dt_iop_clipping_params_t, dt_iop_crop_params_t
raw_black_level : dt_image_t, dt_iop_buffer_dsc_t, dt_iop_rawprepare_data_t
raw_black_level_separate : dt_image_t, dt_iop_rawprepare_params_t
raw_height : dt_variables_data_t
raw_histogram : dt_develop_t
raw_white_point : dt_image_t, dt_iop_buffer_dsc_t, dt_iop_rawprepare_data_t, dt_iop_rawprepare_params_t
raw_width : dt_variables_data_t
rawdetail_mask_data : dt_dev_pixelpipe_t
rawdetail_mask_roi : dt_dev_pixelpipe_t
rawoverexposed : dt_develop_t
rawprepare : dt_iop_buffer_dsc_t, dt_iop_rawprepare_data_t
readFile_mutex : darktable_t
ready : dt_imageio_module_format_t
reconstruct_bloom_vs_details : dt_iop_filmicrgb_data_t, dt_iop_filmicrgb_gui_data_t, dt_iop_filmicrgb_params_t
reconstruct_feather : dt_iop_filmicrgb_data_t, dt_iop_filmicrgb_gui_data_t, dt_iop_filmicrgb_params_t
reconstruct_grey_vs_color : dt_iop_filmicrgb_data_t, dt_iop_filmicrgb_gui_data_t, dt_iop_filmicrgb_params_t
reconstruct_structure_vs_texture : dt_iop_filmicrgb_data_t, dt_iop_filmicrgb_gui_data_t, dt_iop_filmicrgb_params_t
reconstruct_threshold : dt_iop_filmicrgb_data_t, dt_iop_filmicrgb_gui_data_t, dt_iop_filmicrgb_params_t
reconstructing : dt_iop_highlights_params_t
record_history_level : dt_lib_history_t
record_undo : dt_lib_history_t
red : dt_iop_bilateral_gui_data_t, dt_iop_bilateral_params_t, dt_iop_channelmixer_params_t, dt_iop_channelmixer_rgb_params_t, dt_iop_temperature_params_t, dt_liquify_rgba_t
redo_list : dt_undo_t
reentry : dt_dev_pixelpipe_t
reentry_hash : dt_dev_pixelpipe_t
ref : dt_film_t
ref_rotation : chart_t
refcount : dt_pixel_cache_entry_t
reference : dt_lut_t
reference_filename : dt_lut_t
reference_image_box : dt_lut_t
reference_image_button : dt_lut_t
reference_it8_box : dt_lut_t
reference_mode : dt_lut_t
reference_shrink : dt_lut_t
refine_manifolds : dt_iop_cacorrectrgb_gui_data_t, dt_iop_cacorrectrgb_params_t
refresh : dt_iop_watermark_gui_data_t, dt_lib_tool_filter_t
registration_id : dt_dbus_t
regularization : dt_iop_diffuse_gui_data_t, dt_iop_diffuse_params_t, dt_iop_restorescans_data_t, dt_iop_restorescans_gui_data_t, dt_iop_restorescans_t
regularization_first : dt_iop_diffuse_gui_data_t
relevance : _lib_location_result_t, params_fixed_t
renderer : dt_lib_map_locations_t
replay : PermutohedralLattice< D, VD >
request : dt_develop_t
request_color_pick : dt_iop_module_t
request_histogram : dt_dev_pixelpipe_iop_t, dt_iop_module_t
request_mask_display : dt_iop_module_t, dt_undo_history_t
res_mutex : dt_control_t
reserved : dt_develop_blend_params_t, dt_iop_bilateral_params_t
reserved1 : dt_iop_shadhi_params1_t, dt_iop_shadhi_params2_t, dt_iop_shadhi_params3_t
reserved2 : dt_iop_shadhi_params1_t, dt_iop_shadhi_params2_t, dt_iop_shadhi_params3_t, dt_iop_shadhi_params4_t, dt_iop_shadhi_params_t
reset : dt_accels_t, dt_gui_gtk_t
reset_button : dt_iop_module_t, dt_lib_module_t
reset_collection : dt_thumbtable_t
resetvalue : _GtkDarktableGradientSlider
resolution : dt_printer_info_t
response : _piwigo_api_context_t, dt_lib_location_t
response_size : dt_lib_location_t
restrict_histogram : dt_lib_t
result : _callback_param_t, _dt_job_t, dt_conf_dreggn_t, dt_lib_location_t, result_t
result_label : dt_lut_t
results : _accel_lookup_t
return_layer : dwt_params_t
return_type : dt_signal_description
retval : gtk_wrap_communication
reverse : dt_iop_lensfun_gui_data_t, dt_lib_tool_filter_t
rgb : box_t
rgb_matrix : dt_iop_channelmixer_data_t
RGB_to_CAM : dt_iop_invert_gui_data_t
right : dt_dng_gain_map_t, dt_iop_filmicrgb_gui_button_data_t, dt_QRect_t, tile
rlim_cur : rlimit
rlim_max : rlimit
roi : dt_dev_histogram_collection_params_t, local_laplacian_boundary_t, retouch_user_data_t
root : dt_lib_tagging_t
rotate : dt_imageio_pdf_params_t, dt_iop_watermark_data_t, dt_iop_watermark_gui_data_t, dt_iop_watermark_params_t, pdf_t
rotate_to_fit : dt_pdf_image_t
rotation : dt_iop_ashift_data_t, dt_iop_ashift_fit_params_t, dt_iop_ashift_gui_data_t, dt_iop_ashift_params1_t, dt_iop_ashift_params2_t, dt_iop_ashift_params3_t, dt_iop_ashift_params4_t, dt_iop_ashift_params_t, dt_iop_blurs_gui_data_t, dt_iop_blurs_params_t, dt_iop_graduatednd_data_t, dt_iop_graduatednd_gui_data_t, dt_iop_graduatednd_params_t, dt_masks_point_ellipse_t, dt_masks_point_gradient_t
rotation_range : dt_iop_ashift_fit_params_t, dt_iop_ashift_gui_data_t
row_pitch : dt_dng_gain_map_t
rowid : dt_thumbnail_t, dt_thumbtable_t
rows : patch_t
rows_to_remove : dt_control_crawler_gui_t
rt_forms : dt_iop_retouch_params_t
ru_idrss : rusage
ru_inblock : rusage
ru_isrss : rusage
ru_ixrss : rusage
ru_majflt : rusage
ru_maxrss : rusage
ru_minflt : rusage
ru_msgrcv : rusage
ru_msgsnd : rusage
ru_nivcsw : rusage
ru_nsignals : rusage
ru_nswap : rusage
ru_nvcsw : rusage
ru_oublock : rusage
ru_stime : rusage
ru_utime : rusage
rule : dt_lib_collect_params_t, dt_lib_collect_t
rules : dt_lib_collect_params_t
run_mutex : dt_control_t
run_profile : dt_iop_channelmixer_rgb_gui_data_t
run_validation : dt_iop_channelmixer_rgb_gui_data_t
running : dt_control_t, dt_dev_pixelpipe_t
rx : dt_iop_rotatepixels_data_t, dt_iop_rotatepixels_params_t
rXYZ : dt_profiled_colormatrix_t
ry : dt_iop_rotatepixels_data_t, dt_iop_rotatepixels_params_t
rzscale : dt_iop_zonesystem_data_t