From 7bd600e911325401240d06cf0427df505e92f421 Mon Sep 17 00:00:00 2001
From: stan-donarise <stan.donarise@gmail.com>
Date: Sat, 1 Feb 2025 00:09:36 +0300
Subject: [PATCH 1/4] plot.sub refactoring

---
 plot/plot.view.tree | 14 ++++++++------
 plot/plot.view.ts   | 29 ++++++++++++++++++-----------
 2 files changed, 26 insertions(+), 17 deletions(-)

diff --git a/plot/plot.view.tree b/plot/plot.view.tree
index 1dd625a..f700cf6 100644
--- a/plot/plot.view.tree
+++ b/plot/plot.view.tree
@@ -14,12 +14,14 @@ $mpds_visavis_plot $mol_view
 	plot_raw null
 	show_setup false
 	notify? null
-	Fullscreen $mol_check
-		Icon <= Expand_icon $mol_icon_arrow_expand_all
-		checked? <=> fullscreen? false
 	show_demo_warn? false
-	Demo_warn $mol_paragraph
-		title \You are using the limited demo. Buy the full access and support our work.
+	sub /
+		^ demo_warn_visible / <= Demo_warn $mol_paragraph
+			title \You are using the limited demo. Buy the full access and support our work.
+		<= Fullscreen $mol_check
+			Icon <= Expand_icon $mol_icon_arrow_expand_all
+			checked? <=> fullscreen? false
+		<= Plot $mol_view
 	plots *
 		matrix <= Matrix $mpds_visavis_plot_matrix
 			plot_raw <= plot_raw
@@ -36,7 +38,7 @@ $mpds_visavis_plot $mol_view
 			plot_raw <= plot_raw
 			multi_jsons <= multi_jsons
 			show_setup <= show_setup
-			show_fixel? <= show_fixel? true
+			- show_fixel? <= show_fixel? true
 			nonformers_checked? <=> nonformers_checked?
 			fixel_checked? <=> cube_fixel_checked? false
 			x_op? => x_op?
diff --git a/plot/plot.view.ts b/plot/plot.view.ts
index 5a451a0..4fea72f 100644
--- a/plot/plot.view.ts
+++ b/plot/plot.view.ts
@@ -71,17 +71,24 @@ namespace $.$$ {
 		}
 
 		@ $mol_mem
-		sub() {
-			const phase_data_demo = this.plot_raw()?.type()! == 'pd' ? this.phase_data_demo() : false
-			const show_demo_warn = this.show_demo_warn()
-				&& ! [ 'matrix', 'discovery' ].includes( this.plot_raw()?.type()! )
-				&& ! phase_data_demo
-
-			return this.plot_raw() ? [
-				... show_demo_warn ? [ this.Demo_warn() ] : [],
-				this.Fullscreen(),
-				this.plots()[ this.plot_raw()!.type() ]
-			] : []
+		plot_type(): ReturnType< $mpds_visavis_plot_raw['type'] > {
+			return this.plot_raw()?.type()!
+		}
+
+		@ $mol_mem
+		demo_warn_visible() {
+			if( !this.show_demo_warn() ) return []
+
+			if( this.plot_type() == 'matrix' ) return []
+			if( this.plot_type() == 'discovery' ) return []
+			if( this.plot_type() == 'pd' && !this.phase_data_demo() ) return []
+
+			return [ this.Demo_warn() ]
+		}
+
+		@ $mol_mem
+		Plot() {
+			return this.plot_type() ? this.plots()[ this.plot_type()! ] : super.Plot()
 		}
 
 		@ $mol_mem

From 3248794bff7c3e4fde6217c001cdc3d31a34e28e Mon Sep 17 00:00:00 2001
From: stan-donarise <stan.donarise@gmail.com>
Date: Mon, 24 Feb 2025 17:37:17 +0300
Subject: [PATCH 2/4] save state on error; `plot_raw.jsons` refactoring

#43
---
 app/app.view.ts                          | 10 +++--
 plot/bar/bar.view.ts                     |  2 +-
 plot/cube/cube.view.tree                 |  1 -
 plot/cube/cube.view.ts                   | 16 +++----
 plot/customscatter/customscatter.view.ts |  2 +-
 plot/discovery/discovery.view.tree       |  2 +-
 plot/discovery/discovery.view.ts         | 12 +++--
 plot/eigen/eigen.view.ts                 |  2 +-
 plot/graph/graph.view.ts                 |  2 +-
 plot/heatmap/heatmap.view.ts             |  2 +-
 plot/matrix/matrix.view.tree             |  1 -
 plot/matrix/matrix.view.ts               | 20 +++------
 plot/phase/phase.view.ts                 |  2 +-
 plot/pie/pie.view.ts                     |  2 +-
 plot/plot.view.css.ts                    | 27 +++++++++++-
 plot/plot.view.tree                      | 11 +++--
 plot/plot.view.ts                        | 56 ++++++++++++++++--------
 plot/raw/raw.ts                          | 12 ++---
 plot/scatter/scatter.view.ts             |  2 +-
 19 files changed, 113 insertions(+), 71 deletions(-)

diff --git a/app/app.view.ts b/app/app.view.ts
index cc4ff7f..ef2910a 100644
--- a/app/app.view.ts
+++ b/app/app.view.ts
@@ -8,7 +8,7 @@ namespace $.$$ {
 
 				const data = $mol_wire_sync( this.$ ).$mol_blob_json( file )
 
-				const plot_raw = $mol_wire_sync( this.$ ).$mpds_visavis_plot_raw_from_json( data, file.name )
+				const plot_raw = $mol_wire_sync( this.$ ).$mpds_visavis_plot_raw_from_jsons( [ data ], file.name )
 				
 				this.plot_opened_id( this.history_add( plot_raw ) )
 			}
@@ -45,11 +45,13 @@ namespace $.$$ {
 			return this.$.$mol_state_local.value( `${this}.history_plot_ids()` , next ) ?? []
 		}
 
+
 		@ $mol_mem_key
 		plot_raw(id: string, next?: $mpds_visavis_plot_raw | null) {
+
 			if ( this.json_request_hash() ) {
 				const json = $mpds_visavis_plot.fetch_plot_json( this.json_request_hash() )
-				return $mpds_visavis_plot_raw_from_json( json, this.json_request_hash()! )
+				return $mpds_visavis_plot_raw_from_jsons( [ json ], this.json_request_hash()! )
 			}
 
 			if ( this.menu_section() == 'examples' ) {
@@ -63,10 +65,10 @@ namespace $.$$ {
 		@ $mol_mem_key
 		plot_raw_example(id: string) {
 			const data: $mpds_visavis_plot_raw['data_default'] | null = this.$.$mol_state_local.value( `${this}.plot_raw_example('${id}')` )
-			if ( data ) return new $mpds_visavis_plot_raw( data )
+			if ( data?.jsons ) return new $mpds_visavis_plot_raw( data )
 
 			const json = $mol_fetch.json( this.examples()[ id ] )
-			const plot_raw = $mpds_visavis_plot_raw_from_json( json, id )
+			const plot_raw = $mpds_visavis_plot_raw_from_jsons( [ json ], id )
 			this.$.$mol_state_local.value( `${this}.plot_raw_example('${id}')`, plot_raw.data() )
 			return plot_raw
 		}
diff --git a/plot/bar/bar.view.ts b/plot/bar/bar.view.ts
index ada015a..b099727 100644
--- a/plot/bar/bar.view.ts
+++ b/plot/bar/bar.view.ts
@@ -16,7 +16,7 @@ namespace $.$$ {
 	export class $mpds_visavis_plot_bar extends $.$mpds_visavis_plot_bar {
 
 		json() {
-			return $mpds_visavis_plot_bar_json( this.plot_raw().json() as any )
+			return $mpds_visavis_plot_bar_json( this.plot_raw().jsons()[0] )
 		}
 
 		@ $mol_mem
diff --git a/plot/cube/cube.view.tree b/plot/cube/cube.view.tree
index 64f718a..7d654c6 100644
--- a/plot/cube/cube.view.tree
+++ b/plot/cube/cube.view.tree
@@ -2,7 +2,6 @@ $mpds_visavis_plot_cube $mol_view
 	plot_raw $mpds_visavis_plot_raw
 	auto /
 		<= subscribe_click null
-	multi_jsons? null
 	show_setup true
 	show_fixel? true
 	heatmap? false
diff --git a/plot/cube/cube.view.ts b/plot/cube/cube.view.ts
index 3879d99..3189b95 100644
--- a/plot/cube/cube.view.ts
+++ b/plot/cube/cube.view.ts
@@ -29,7 +29,7 @@ namespace $.$$ {
 		setup() {
 			return [
 				... this.show_fixel() ? [ this.Fixel() ] : [],
-				... this.multi_jsons() ? [ this.Intersection_on() ] : [],
+				... this.plot_raw().jsons().length > 1 ? [ this.Intersection_on() ] : [],
 				this.Nonformers(),
 				... this.show_setup() ? [ this.X_order(), this.Y_order(), this.Z_order() ] : [],
 			]
@@ -39,13 +39,13 @@ namespace $.$$ {
 		plot_body() {
 			return [
 				this.Root(),
-				... this.multi_jsons() ? [ this.Cmp_legend() ] : [],
+				... this.plot_raw().jsons().length > 1 ? [ this.Cmp_legend() ] : [],
 				... this.heatmap() ? [ this.Side_right() ] : [],
 			]
 		}
 
 		json() {
-			return $mpds_visavis_plot_cube_json( this.plot_raw().json() as any )
+			return $mpds_visavis_plot_cube_json( this.plot_raw().jsons()[0] )
 		}
 
 		@ $mol_mem
@@ -74,7 +74,7 @@ namespace $.$$ {
 
 		@ $mol_mem
 		heatmap_diif() {
-			const jsons = this.multi_jsons() as typeof $mpds_visavis_plot_cube_json.Value[]
+			const jsons = this.plot_raw().jsons() as typeof $mpds_visavis_plot_cube_json.Value[]
 			if( jsons?.length == 2 ) {
 				return jsons.every( json => json.payload.points.v.some(val => Math.floor(val) !== val) )
 			}
@@ -85,7 +85,7 @@ namespace $.$$ {
 		heatmap() {
 			if( this.heatmap_diif() ) return this.intersection_only()
 
-			const jsons = this.multi_jsons() as typeof $mpds_visavis_plot_cube_json.Value[]
+			const jsons = this.plot_raw().jsons() as typeof $mpds_visavis_plot_cube_json.Value[]
 			let json = this.json()
 			if( jsons?.length == 1 ) json = jsons[0]
 
@@ -171,7 +171,7 @@ namespace $.$$ {
 		@ $mol_mem
 		points_traversed() {
 
-			const jsons = this.multi_jsons() ?? [ this.json() ]
+			const jsons = this.plot_raw().jsons()
 
 			const values_by_label: Record<
 				string/*json index*/, 
@@ -297,7 +297,7 @@ namespace $.$$ {
 		@ $mol_mem
 		multi_dataset(): any[] | null {
 
-			if( ! this.multi_jsons() ) return null
+			if( this.plot_raw().jsons().length === 1 ) return null
 
 			this.nonformers_checked( false )
 
@@ -310,7 +310,7 @@ namespace $.$$ {
 
 		@ $mol_mem
 		cmp_labels() {
-			return this.multi_jsons() ? this.multi_jsons()!.map( (json: any) => json.answerto ) : []
+			return this.plot_raw().jsons().length > 1 ? this.plot_raw().jsons()!.map( (json: any) => json.answerto ) : []
 		}
 
 		@ $mol_mem
diff --git a/plot/customscatter/customscatter.view.ts b/plot/customscatter/customscatter.view.ts
index e2ca2f4..462c16b 100644
--- a/plot/customscatter/customscatter.view.ts
+++ b/plot/customscatter/customscatter.view.ts
@@ -21,7 +21,7 @@ namespace $.$$ {
 	export class $mpds_visavis_plot_customscatter extends $.$mpds_visavis_plot_customscatter {
 
 		json() {
-			return $mpds_visavis_plot_customscatter_json( this.plot_raw().json() as any )
+			return $mpds_visavis_plot_customscatter_json( this.plot_raw().jsons()[0] )
 		}
 
 		@ $mol_mem
diff --git a/plot/discovery/discovery.view.tree b/plot/discovery/discovery.view.tree
index e62e33f..c468814 100644
--- a/plot/discovery/discovery.view.tree
+++ b/plot/discovery/discovery.view.tree
@@ -2,7 +2,7 @@ $mpds_visavis_plot_discovery $mol_view
 	plot_raw $mpds_visavis_plot_raw
 	auto /
 		<= subscribe_click null
-	json_cmp? null
+	json_cmp null
 	elementals_on? /
 	show_setup true
 	discovery_click? null
diff --git a/plot/discovery/discovery.view.ts b/plot/discovery/discovery.view.ts
index 49bfa19..47db501 100644
--- a/plot/discovery/discovery.view.ts
+++ b/plot/discovery/discovery.view.ts
@@ -110,7 +110,12 @@ namespace $.$$ {
 		}
 
 		json() {
-			return $mpds_visavis_plot_discovery_json( this.plot_raw().json() as any )
+			return $mpds_visavis_plot_discovery_json( this.plot_raw().jsons()[0] )
+		}
+
+		json_cmp() {
+			const json_cmp = this.plot_raw().jsons()[1]
+			return json_cmp ? $mpds_visavis_plot_discovery_json( json_cmp ) : null
 		}
 
 		elementals_dict() {
@@ -214,7 +219,7 @@ namespace $.$$ {
 		data() {
 		
 			const json = this.json()
-			const json_cmp = this.json_cmp() ? $mpds_visavis_plot_discovery_json( this.json_cmp() ) : null
+			const json_cmp = this.json_cmp()
 
 			const elementals_on = this.elementals_on()
 
@@ -245,7 +250,8 @@ namespace $.$$ {
 
 		@ $mol_mem
 		cmp_labels() {
-			return this.json_cmp() ? [ this.json().answerto, this.json_cmp().answerto ] : []
+			const cmp = this.json_cmp()
+			return cmp ? [ this.json().answerto, cmp.answerto ] : []
 		}
 
 	}
diff --git a/plot/eigen/eigen.view.ts b/plot/eigen/eigen.view.ts
index a0f1234..ab32d60 100644
--- a/plot/eigen/eigen.view.ts
+++ b/plot/eigen/eigen.view.ts
@@ -61,7 +61,7 @@ namespace $.$$ {
 	export class $mpds_visavis_plot_eigen extends $.$mpds_visavis_plot_eigen {
 
 		json() {
-			return $mpds_visavis_plot_eigen_json( this.plot_raw().json() as any )
+			return $mpds_visavis_plot_eigen_json( this.plot_raw().jsons()[0] )
 		}
 
 		@ $mol_mem
diff --git a/plot/graph/graph.view.ts b/plot/graph/graph.view.ts
index 75c2abf..c8c87d9 100644
--- a/plot/graph/graph.view.ts
+++ b/plot/graph/graph.view.ts
@@ -37,7 +37,7 @@ namespace $.$$ {
 
 		@ $mol_mem
 		json() {
-			return $mpds_visavis_plot_graph_json( this.plot_raw().json() as any )
+			return $mpds_visavis_plot_graph_json( this.plot_raw().jsons()[0] )
 		}
 
 		plot_title() {
diff --git a/plot/heatmap/heatmap.view.ts b/plot/heatmap/heatmap.view.ts
index 09e7c32..4f27353 100644
--- a/plot/heatmap/heatmap.view.ts
+++ b/plot/heatmap/heatmap.view.ts
@@ -5,7 +5,7 @@ namespace $.$$ {
 	export class $mpds_visavis_plot_heatmap extends $.$mpds_visavis_plot_heatmap {
 
 		json() {
-			return this.plot_raw().json() as any
+			return this.plot_raw().jsons()[0]
 			// return $mpds_visavis_plot_heatmap_json( this.plot_raw().json() as any )
 		}
 
diff --git a/plot/matrix/matrix.view.tree b/plot/matrix/matrix.view.tree
index c1fa272..1225d2c 100644
--- a/plot/matrix/matrix.view.tree
+++ b/plot/matrix/matrix.view.tree
@@ -3,7 +3,6 @@ $mpds_visavis_plot_matrix $mol_view
 	auto /
 		<= size_debounced 0
 		<= auto_reorder null
-	multi_jsons? null
 	json_master null
 	show_setup true
 	size? 0
diff --git a/plot/matrix/matrix.view.ts b/plot/matrix/matrix.view.ts
index df7669e..d76db50 100644
--- a/plot/matrix/matrix.view.ts
+++ b/plot/matrix/matrix.view.ts
@@ -52,8 +52,8 @@ namespace $.$$ {
 		@ $mol_mem
 		setup() {
 			return [
-				... this.json().payload.fixel ? [ this.Fixel() ] : [],
-				... this.multi_jsons() ? [ this.Intersection_on() ] : [],
+				... this.json_master().payload.fixel ? [ this.Fixel() ] : [],
+				... this.plot_raw().jsons().length > 1 ? [ this.Intersection_on() ] : [],
 				this.Nonformers(),
 				... this.show_setup() ? this.sorting() : [],
 			]
@@ -65,16 +65,11 @@ namespace $.$$ {
 				this.Root(),
 				... this.x_op() ? [ this.X_label() ] : [],
 				... this.y_op() ? [ this.Y_label() ] : [],
-				... this.multi_jsons() ? [ this.Cmp_legend() ] : [],
+				... this.plot_raw().jsons().length > 1 ? [ this.Cmp_legend() ] : [],
 				... this.heatmap() ? [ this.Side_right() ] : [],
 			]
 		}
 
-		@ $mol_mem
-		json() {
-			return $mpds_visavis_plot_matrix_json( this.plot_raw().json() as any )
-		}
-
 		@ $mol_mem
 		sort_dict() {
 			return $mpds_visavis_elements_list.prop_names()
@@ -94,14 +89,13 @@ namespace $.$$ {
 
 		@ $mol_mem
 		cmp_labels() {
-			return this.multi_jsons() ? this.multi_jsons()!.map( (json: any) => json.answerto ) : []
+			const jsons = this.plot_raw().jsons()
+			return jsons.length > 1 ? jsons.map( json => json.answerto ) : []
 		}
 
 		@ $mol_mem
 		json_master() {
-			if ( ! this.multi_jsons() ) return this.json()
-
-			const jsons: any[] = this.multi_jsons()!
+			const jsons = this.plot_raw().jsons()
 			
 			const json_master = JSON.parse( JSON.stringify(
 				$mpds_visavis_plot_matrix_json( jsons[0] ) 
@@ -203,7 +197,7 @@ namespace $.$$ {
 				return 'entries'
 			}
 			
-			const datesets_quantity = this.multi_jsons()?.length || 1
+			const datesets_quantity = this.plot_raw().jsons().length
 			if( datesets_quantity == heatmap_datasets.size && heatmap_datasets.size <= 2 ) {
 				return 'heatmap'
 			}
diff --git a/plot/phase/phase.view.ts b/plot/phase/phase.view.ts
index 0a0e464..2a10c7b 100644
--- a/plot/phase/phase.view.ts
+++ b/plot/phase/phase.view.ts
@@ -158,7 +158,7 @@ namespace $.$$ {
 	export class $mpds_visavis_plot_phase extends $.$mpds_visavis_plot_phase {
 
 		json() {
-			return $mpds_visavis_plot_phase_rect_json( this.plot_raw().json() as any )
+			return $mpds_visavis_plot_phase_rect_json( this.plot_raw().jsons()[0] )
 		}
 
 		json_title_b() {
diff --git a/plot/pie/pie.view.ts b/plot/pie/pie.view.ts
index 451fe8e..ce6df7b 100644
--- a/plot/pie/pie.view.ts
+++ b/plot/pie/pie.view.ts
@@ -38,7 +38,7 @@ namespace $.$$ {
 	export class $mpds_visavis_plot_pie extends $.$mpds_visavis_plot_pie {
 
 		json() {
-			return $mpds_visavis_plot_pie_json( this.plot_raw().json() as any )
+			return $mpds_visavis_plot_pie_json( this.plot_raw().jsons()[0] )
 		}
 
 		@ $mol_mem
diff --git a/plot/plot.view.css.ts b/plot/plot.view.css.ts
index f1c9bb5..5952699 100644
--- a/plot/plot.view.css.ts
+++ b/plot/plot.view.css.ts
@@ -24,7 +24,32 @@ namespace $.$$ {
 			},
 			zIndex: 1,
 			cursor: 'default',
-		}
+		},
+
+		Error: {
+			position: 'absolute',
+			width: '50%',
+			height: '50%',
+			left: '25%',
+			top: '25%',
+
+			justify: {
+				content: 'center'
+			},
+			align: {
+				items: 'center',
+			},
+
+			background: {
+				color: $mol_theme.back,
+			},
+			border: {
+				radius: $mol_gap.round,
+			},
+
+			zIndex: 1,
+			cursor: 'default',
+		},
 
 	} )
 
diff --git a/plot/plot.view.tree b/plot/plot.view.tree
index f700cf6..a2c3de1 100644
--- a/plot/plot.view.tree
+++ b/plot/plot.view.tree
@@ -6,10 +6,10 @@ $mpds_visavis_plot $mol_view
 	Locale $mol_locale_select
 		value <= locale \en
 	json_request? null
-	json null
 	json_cmp_request? null
-	json_cmp null
 	multi_requests? /string
+		\https://api.mpds.io/v0/visavis/cube?q=%7B%22elements%22%3A%22Li-O%22%2C%22search_type%22%3A0%7D
+		\https://api.mpds.io/v0/visavis/cube?q=%7B%22props%22%3A%22crystal%20structure%22%2C%22classes%22%3A%22non-disordered%22%2C%22years%22%3A%222000-2020%22%7D
 	multi_jsons null
 	plot_raw null
 	show_setup false
@@ -22,10 +22,11 @@ $mpds_visavis_plot $mol_view
 			Icon <= Expand_icon $mol_icon_arrow_expand_all
 			checked? <=> fullscreen? false
 		<= Plot $mol_view
+		^ error_visible / <= Error $mol_view
+			sub / <= error_message \
 	plots *
 		matrix <= Matrix $mpds_visavis_plot_matrix
 			plot_raw <= plot_raw
-			multi_jsons <= multi_jsons
 			show_setup <= show_setup
 			nonformers_checked? <=> nonformers_checked? false
 			fixel_checked? <=> matrix_fixel_checked? true
@@ -36,9 +37,8 @@ $mpds_visavis_plot $mol_view
 			matrix_click? <=> matrix_click? null
 		plot3d <= Cube $mpds_visavis_plot_cube
 			plot_raw <= plot_raw
-			multi_jsons <= multi_jsons
 			show_setup <= show_setup
-			- show_fixel? <= show_fixel? true
+			show_fixel? <= show_fixel? true
 			nonformers_checked? <=> nonformers_checked?
 			fixel_checked? <=> cube_fixel_checked? false
 			x_op? => x_op?
@@ -57,7 +57,6 @@ $mpds_visavis_plot $mol_view
 			bar_click? <=> bar_click? null
 		discovery <= Discovery $mpds_visavis_plot_discovery
 			plot_raw <= plot_raw
-			json_cmp <= json_cmp
 			show_setup <= show_setup
 			elementals_on? => discovery_elementals_on?
 			discovery_click? <=> discovery_click? null
diff --git a/plot/plot.view.ts b/plot/plot.view.ts
index 4fea72f..2cacceb 100644
--- a/plot/plot.view.ts
+++ b/plot/plot.view.ts
@@ -14,32 +14,54 @@ namespace $.$$ {
 			return json
 		}
 
+		@ $mol_mem
+		requests() {
+			if( this.json_cmp_request() ) return [ this.json_request()!, this.json_cmp_request()! ]
+			if( this.multi_requests().length > 0 ) return this.multi_requests()
+			return [ this.json_request() ]
+		}
+
 		@ $mol_mem_key
 		json_fetched( request: string ) {
 			return $mpds_visavis_plot.fetch_plot_json( request )
 		}
 
 		@ $mol_mem
-		json() {
-			return this.json_fetched( this.json_request() )
+		jsons_fetched() {
+			const requests = this.requests()
+			return requests.map( req => this.json_fetched( req ) )
 		}
 
+		jsons_cached?: any[] | null
 		@ $mol_mem
-		json_cmp(): any {
-			return this.multi_jsons()?.[1] ?? null
+		jsons() {
+			try {
+				const jsons = this.jsons_fetched()
+				this.jsons_cached = jsons
+				return jsons
+
+			} catch( error ) {
+				if( !this.$.$mol_promise_like( error ) && this.jsons_cached ) {
+					console.error( error )
+					return this.jsons_cached
+				}
+				throw error
+			}
 		}
 
-		@ $mol_mem
-		multi_requests( next?: string[] ): readonly string[] {
-			if( next !== undefined ) return next
-			if( this.json_cmp_request() ) return [ this.json_request()!, this.json_cmp_request()! ]
-			return super.multi_requests()
+		error_visible() {
+			return this.error_message() ? super.error_visible() : []
 		}
 
-		@ $mol_mem
-		multi_jsons() {
-			let requests = this.multi_requests()
-			return requests.length > 0 ? requests.map( req => this.json_fetched( req ) ) : null
+		error_message(): string {
+			try {
+				this.jsons_fetched()
+				return ''
+
+			} catch( error: any ) {
+				if( this.$.$mol_promise_like( error ) ) throw error
+				return error.message || String( error )
+			}
 		}
 
 		@ $mol_mem
@@ -53,7 +75,7 @@ namespace $.$$ {
 		@ $mol_mem
 		inconsistent_projection() {
 			const fixels = new Set
-			this.multi_jsons()?.forEach( json => fixels.add( json.payload?.fixel ) )
+			this.jsons().forEach( json => fixels.add( json.payload?.fixel ) )
 			return fixels.size > 1
 		}
 
@@ -63,11 +85,7 @@ namespace $.$$ {
 				this.notify( 'Error: inconsistent datasets projection' )
 			}
 
-			return this.multi_jsons()
-				? $mpds_visavis_plot_raw_from_json( this.multi_jsons()![0] )
-				: this.json()
-					? $mpds_visavis_plot_raw_from_json( this.json() )
-					: null
+			return $mpds_visavis_plot_raw_from_jsons( this.jsons() )
 		}
 
 		@ $mol_mem
diff --git a/plot/raw/raw.ts b/plot/raw/raw.ts
index 03903ca..c382837 100644
--- a/plot/raw/raw.ts
+++ b/plot/raw/raw.ts
@@ -3,14 +3,14 @@ namespace $ {
 	interface Plot_raw {
 		id: string
 		type: 'matrix' | 'plot3d' | 'pd' | 'bar' | 'discovery' | 'eigenplot' | 'pie' | 'scatter' | 'customscatter' | 'heatmap' | 'graph'
-		json: unknown
+		jsons: any[]
 	}
 
-	export function $mpds_visavis_plot_raw_from_json( json: any, id?: string ){
+	export function $mpds_visavis_plot_raw_from_jsons( jsons: any[], id?: string ){
 		return new $mpds_visavis_plot_raw({
 			id: id || $mol_guid(),
-			type: json.use_visavis_type ?? 'unknown',
-			json,
+			type: jsons[0].use_visavis_type ?? 'unknown',
+			jsons,
 		})
 	}
 
@@ -24,8 +24,8 @@ namespace $ {
 			return this.value('type')
 		}
 
-		json() {
-			return this.value('json')
+		jsons() {
+			return this.value('jsons')
 		}
 
 	}
diff --git a/plot/scatter/scatter.view.ts b/plot/scatter/scatter.view.ts
index 4edb62d..1a2d660 100644
--- a/plot/scatter/scatter.view.ts
+++ b/plot/scatter/scatter.view.ts
@@ -46,7 +46,7 @@ namespace $.$$ {
 
 		json() {
 			// notify('Cannot get plot data, please, try again');
-			return $mpds_visavis_plot_scatter_json( this.plot_raw().json() as any )
+			return $mpds_visavis_plot_scatter_json( this.plot_raw().jsons()[0] )
 		}
 
 		@ $mol_mem

From 3045a96667f94d0d14fb42d492e8f38314549fd9 Mon Sep 17 00:00:00 2001
From: stan-donarise <stan.donarise@gmail.com>
Date: Mon, 24 Feb 2025 18:02:15 +0300
Subject: [PATCH 3/4] Update plot.view.tree

---
 plot/plot.view.tree | 2 --
 1 file changed, 2 deletions(-)

diff --git a/plot/plot.view.tree b/plot/plot.view.tree
index a2c3de1..04b8bd9 100644
--- a/plot/plot.view.tree
+++ b/plot/plot.view.tree
@@ -8,8 +8,6 @@ $mpds_visavis_plot $mol_view
 	json_request? null
 	json_cmp_request? null
 	multi_requests? /string
-		\https://api.mpds.io/v0/visavis/cube?q=%7B%22elements%22%3A%22Li-O%22%2C%22search_type%22%3A0%7D
-		\https://api.mpds.io/v0/visavis/cube?q=%7B%22props%22%3A%22crystal%20structure%22%2C%22classes%22%3A%22non-disordered%22%2C%22years%22%3A%222000-2020%22%7D
 	multi_jsons null
 	plot_raw null
 	show_setup false

From e5fd8d263de81a2f04a0f4957a2870a9f06d2c1d Mon Sep 17 00:00:00 2001
From: stan-donarise <stan.donarise@gmail.com>
Date: Mon, 24 Feb 2025 19:14:00 +0300
Subject: [PATCH 4/4] reset method added

---
 plot/plot.view.tree | 3 ++-
 plot/plot.view.ts   | 8 ++++++++
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/plot/plot.view.tree b/plot/plot.view.tree
index 04b8bd9..bffcc8a 100644
--- a/plot/plot.view.tree
+++ b/plot/plot.view.tree
@@ -13,7 +13,8 @@ $mpds_visavis_plot $mol_view
 	show_setup false
 	notify? null
 	show_demo_warn? false
-	sub /
+	reset null
+	sub? /
 		^ demo_warn_visible / <= Demo_warn $mol_paragraph
 			title \You are using the limited demo. Buy the full access and support our work.
 		<= Fullscreen $mol_check
diff --git a/plot/plot.view.ts b/plot/plot.view.ts
index 2cacceb..6864f34 100644
--- a/plot/plot.view.ts
+++ b/plot/plot.view.ts
@@ -155,6 +155,14 @@ namespace $.$$ {
 			alert( msg )
 		}
 
+		@ $mol_action
+		reset() {
+			const sub = [ ...this.sub() ]
+			this.sub( [] )
+
+			setTimeout( ()=> this.sub( sub ), 0 )
+		}
+
 	}
 
 	$mol_view_component( $mpds_visavis_plot )